401473391 has 16 divisors (see below), whose sum is σ = 446304768. Its totient is φ = 358063200.

The previous prime is 401473381. The next prime is 401473399. The reversal of 401473391 is 193374104.

It is not a de Polignac number, because 401473391 - 2¹⁸ = 401211247 is a prime.

It is a super-2 number, since 2×401473391² = 322361767362077762, 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 (401473399) 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, 487406 + ... + 488228.

It is an arithmetic number, because the mean of its divisors is an integer number (27894048).

Almost surely, 2^401473391 is an apocalyptic number.

401473391 is a deficient number, since it is larger than the sum of its proper divisors (44831377).

401473391 is a wasteful number, since it uses less digits than its factorization.

401473391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 401473391 is about 20036.8009173121. The cubic root of 401473391 is about 737.7098610276.

The spelling of 401473391 in words is "four hundred one million, four hundred seventy-three thousand, three hundred ninety-one".