400560787 has 8 divisors (see below), whose sum is σ = 441886320. Its totient is φ = 360053760.

The previous prime is 400560763. The next prime is 400560829. The reversal of 400560787 is 787065004.

It is a happy number.

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-400560787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400560707) by changing a digit.

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, 203598 + ... + 205555.

It is an arithmetic number, because the mean of its divisors is an integer number (55235790).

Almost surely, 2^400560787 is an apocalyptic number.

400560787 is a deficient number, since it is larger than the sum of its proper divisors (41325533).

400560787 is a wasteful number, since it uses less digits than its factorization.

400560787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409253.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 400560787 is about 20014.0147646593. The cubic root of 400560787 is about 737.1504651039.

The spelling of 400560787 in words is "four hundred million, five hundred sixty thousand, seven hundred eighty-seven".