401791488 has 80 divisors (see below), whose sum is σ = 1223344320. Its totient is φ = 114794496.

The previous prime is 401791483. The next prime is 401791493. The reversal of 401791488 is 884197104.

It is an interprime number because it is at equal distance from previous prime (401791483) and next prime (401791493).

It is a super-2 number, since 2×401791488² = 322872799658508288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (401791483) 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, 7933 + ... + 29436.

It is an arithmetic number, because the mean of its divisors is an integer number (15291804).

Almost surely, 2^401791488 is an apocalyptic number.

401791488 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

401791488 is an abundant number, since it is smaller than the sum of its proper divisors (821552832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401791488 is an equidigital number, since it uses as much as digits as its factorization.

401791488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37397 (or 37381 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 401791488 is about 20044.7371646525. The cubic root of 401791488 is about 737.9046446668.

The spelling of 401791488 in words is "four hundred one million, seven hundred ninety-one thousand, four hundred eighty-eight".