401038651 has 16 divisors (see below), whose sum is σ = 455232960. Its totient is φ = 350663040.

The previous prime is 401038621. The next prime is 401038663. The reversal of 401038651 is 156830104.

It is not a de Polignac number, because 401038651 - 2⁹ = 401038139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401038621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9946 + ... + 30016.

It is an arithmetic number, because the mean of its divisors is an integer number (28452060).

Almost surely, 2^401038651 is an apocalyptic number.

401038651 is a deficient number, since it is larger than the sum of its proper divisors (54194309).

401038651 is a wasteful number, since it uses less digits than its factorization.

401038651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20166.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 401038651 is about 20025.9494406632. The cubic root of 401038651 is about 737.4434857010.

Adding to 401038651 its reverse (156830104), we get a palindrome (557868755).

The spelling of 401038651 in words is "four hundred one million, thirty-eight thousand, six hundred fifty-one".