401313993 has 8 divisors (see below), whose sum is σ = 536028000. Its totient is φ = 267071328.

The previous prime is 401313967. The next prime is 401314009. The reversal of 401313993 is 399313104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-401313993 is a prime.

It is a super-2 number, since 2×401313993² = 322105841955208098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401313943) 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, 115843 + ... + 119256.

It is an arithmetic number, because the mean of its divisors is an integer number (67003500).

Almost surely, 2^401313993 is an apocalyptic number.

It is an amenable number.

401313993 is a deficient number, since it is larger than the sum of its proper divisors (134714007).

401313993 is a wasteful number, since it uses less digits than its factorization.

401313993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235671.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 401313993 is about 20032.8228914449. The cubic root of 401313993 is about 737.6122164972.

The spelling of 401313993 in words is "four hundred one million, three hundred thirteen thousand, nine hundred ninety-three".