91409141 has 8 divisors (see below), whose sum is σ = 93360600. Its totient is φ = 89478400.

The previous prime is 91409093. The next prime is 91409147. The reversal of 91409141 is 14190419.

It can be written as a sum of positive squares in 4 ways, for example, as 45508516 + 45900625 = 6746^2 + 6775^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91409141 - 2⁶ = 91409077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91409147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3905 + ... + 14073.

It is an arithmetic number, because the mean of its divisors is an integer number (11670075).

Almost surely, 2^91409141 is an apocalyptic number.

It is an amenable number.

91409141 is a deficient number, since it is larger than the sum of its proper divisors (1951459).

91409141 is a wasteful number, since it uses less digits than its factorization.

91409141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10359.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 91409141 is about 9560.8127792568. The cubic root of 91409141 is about 450.4672365096.

It can be divided in two parts, 9140 and 9141, that added together give a palindrome (18281).

The spelling of 91409141 in words is "ninety-one million, four hundred nine thousand, one hundred forty-one".