912866440 has 16 divisors (see below), whose sum is σ = 2053949580. Its totient is φ = 365146560.

The previous prime is 912866431. The next prime is 912866447. The reversal of 912866440 is 44668219.

It can be written as a sum of positive squares in 2 ways, for example, as 821051716 + 91814724 = 28654^2 + 9582^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 22821661 = 912866440 / (9 + 1 + 2 + 8 + 6 + 6 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 912866393 and 912866402.

It is not an unprimeable number, because it can be changed into a prime (912866447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11410791 + ... + 11410870.

Almost surely, 2^912866440 is an apocalyptic number.

It is an amenable number.

912866440 is an abundant number, since it is smaller than the sum of its proper divisors (1141083140).

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

912866440 is a wasteful number, since it uses less digits than its factorization.

912866440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22821672 (or 22821668 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 912866440 is about 30213.6796832163. The cubic root of 912866440 is about 970.0685252897.

The spelling of 912866440 in words is "nine hundred twelve million, eight hundred sixty-six thousand, four hundred forty".