401587793 has 8 divisors (see below), whose sum is σ = 411199008. Its totient is φ = 391989024.

The previous prime is 401587789. The next prime is 401587829. The reversal of 401587793 is 397785104.

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

It is a cyclic number.

It is not a de Polignac number, because 401587793 - 2² = 401587789 is a prime.

It is a super-2 number, since 2×401587793² = 322545510973221698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401587723) 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, 111446 + ... + 114992.

It is an arithmetic number, because the mean of its divisors is an integer number (51399876).

Almost surely, 2^401587793 is an apocalyptic number.

401587793 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

401587793 is a deficient number, since it is larger than the sum of its proper divisors (9611215).

401587793 is a wasteful number, since it uses less digits than its factorization.

401587793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 401587793 is about 20039.6555110112. The cubic root of 401587793 is about 737.7799258358.

The spelling of 401587793 in words is "four hundred one million, five hundred eighty-seven thousand, seven hundred ninety-three".