940400856 has 24 divisors (see below), whose sum is σ = 2546919180. Its totient is φ = 313466928.

The previous prime is 940400833. The next prime is 940400869. The reversal of 940400856 is 658004049.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 940400856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6530490 + ... + 6530633.

Almost surely, 2^940400856 is an apocalyptic number.

It is an amenable number.

940400856 is an abundant number, since it is smaller than the sum of its proper divisors (1606518324).

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

940400856 is a wasteful number, since it uses less digits than its factorization.

940400856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13061135 (or 13061128 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 940400856 is about 30665.9559772723. The cubic root of 940400856 is about 979.7253346606.

The spelling of 940400856 in words is "nine hundred forty million, four hundred thousand, eight hundred fifty-six".