791285440 has 56 divisors (see below), whose sum is σ = 2055552912. Its totient is φ = 287738880.

The previous prime is 791285423. The next prime is 791285459. The reversal of 791285440 is 44582197.

It is a super-2 number, since 2×791285440² = 1252265295111987200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 791285393 and 791285402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108879 + ... + 115918.

It is an arithmetic number, because the mean of its divisors is an integer number (36706302).

Almost surely, 2^791285440 is an apocalyptic number.

It is an amenable number.

791285440 is an abundant number, since it is smaller than the sum of its proper divisors (1264267472).

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

791285440 is a wasteful number, since it uses less digits than its factorization.

791285440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224825 (or 224815 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 791285440 is about 28129.7963021420. The cubic root of 791285440 is about 924.9346688702.

The spelling of 791285440 in words is "seven hundred ninety-one million, two hundred eighty-five thousand, four hundred forty".