401255039 has 4 divisors (see below), whose sum is σ = 401310624. Its totient is φ = 401199456.

The previous prime is 401255021. The next prime is 401255087. The reversal of 401255039 is 930552104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401255039 is a prime.

It is a super-2 number, since 2×401255039² = 322011212645783042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401255089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15002 + ... + 32055.

It is an arithmetic number, because the mean of its divisors is an integer number (100327656).

Almost surely, 2^401255039 is an apocalyptic number.

401255039 is a deficient number, since it is larger than the sum of its proper divisors (55585).

401255039 is an equidigital number, since it uses as much as digits as its factorization.

401255039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55584.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 401255039 is about 20031.3514022394. The cubic root of 401255039 is about 737.5760957199.

The spelling of 401255039 in words is "four hundred one million, two hundred fifty-five thousand, thirty-nine".