9491401 has 2 divisors, whose sum is σ = 9491402. Its totient is φ = 9491400.

The previous prime is 9491371. The next prime is 9491429. The reversal of 9491401 is 1041949.

It is an a-pointer prime, because the next prime (9491429) can be obtained adding 9491401 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 491401 = 3000^2 + 701^2 .

It is an emirp because it is prime and its reverse (1041949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9491401 - 2⁹ = 9490889 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9491401.

It is not a weakly prime, because it can be changed into another prime (9491101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4745700 + 4745701.

It is an arithmetic number, because the mean of its divisors is an integer number (4745701).

Almost surely, 2^9491401 is an apocalyptic number.

It is an amenable number.

9491401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9491401 is an equidigital number, since it uses as much as digits as its factorization.

9491401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 9491401 is about 3080.8117436806. The cubic root of 9491401 is about 211.7272584368.

It can be divided in two parts, 9 and 491401, that multiplied together give a square (4422609 = 2103²).

The spelling of 9491401 in words is "nine million, four hundred ninety-one thousand, four hundred one".