401492321 has 4 divisors (see below), whose sum is σ = 403092144. Its totient is φ = 399892500.

The previous prime is 401492237. The next prime is 401492407. The reversal of 401492321 is 123294104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401492321 - 2²⁶ = 334383457 is a prime.

It is a super-2 number, since 2×401492321² = 322392167643934082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401492821) 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, 799535 + ... + 800036.

It is an arithmetic number, because the mean of its divisors is an integer number (100773036).

Almost surely, 2^401492321 is an apocalyptic number.

It is an amenable number.

401492321 is a deficient number, since it is larger than the sum of its proper divisors (1599823).

401492321 is a wasteful number, since it uses less digits than its factorization.

401492321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599822.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 401492321 is about 20037.2732925416. The cubic root of 401492321 is about 737.7214555097.

The spelling of 401492321 in words is "four hundred one million, four hundred ninety-two thousand, three hundred twenty-one".