401653902 has 16 divisors (see below), whose sum is σ = 865100880. Its totient is φ = 123585792.

The previous prime is 401653891. The next prime is 401653909. The reversal of 401653902 is 209356104.

It is a super-2 number, since 2×401653902² = 322651713983651208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401653902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401653909) 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, 2574627 + ... + 2574782.

It is an arithmetic number, because the mean of its divisors is an integer number (54068805).

Almost surely, 2^401653902 is an apocalyptic number.

401653902 is an abundant number, since it is smaller than the sum of its proper divisors (463446978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401653902 is a wasteful number, since it uses less digits than its factorization.

401653902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149427.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 401653902 is about 20041.3048976358. The cubic root of 401653902 is about 737.8204078241.

The spelling of 401653902 in words is "four hundred one million, six hundred fifty-three thousand, nine hundred two".