401611749 has 32 divisors (see below), whose sum is σ = 690647040. Its totient is φ = 201432000.

The previous prime is 401611733. The next prime is 401611751. The reversal of 401611749 is 947116104.

It is not a de Polignac number, because 401611749 - 2⁴ = 401611733 is a prime.

It is a super-2 number, since 2×401611749² = 322583993869678002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401612749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23277 + ... + 36674.

It is an arithmetic number, because the mean of its divisors is an integer number (21582720).

Almost surely, 2^401611749 is an apocalyptic number.

It is an amenable number.

401611749 is a deficient number, since it is larger than the sum of its proper divisors (289035291).

401611749 is a wasteful number, since it uses less digits than its factorization.

401611749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60001.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 401611749 is about 20040.2532169631. The cubic root of 401611749 is about 737.7945958572.

The spelling of 401611749 in words is "four hundred one million, six hundred eleven thousand, seven hundred forty-nine".