769906440 has 48 divisors (see below), whose sum is σ = 2502197100. Its totient is φ = 205308288.

The previous prime is 769906427. The next prime is 769906453. The reversal of 769906440 is 44609967.

It is an interprime number because it is at equal distance from previous prime (769906427) and next prime (769906453).

It can be written as a sum of positive squares in 2 ways, for example, as 769396644 + 509796 = 27738^2 + 714^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1068955 + ... + 1069674.

Almost surely, 2^769906440 is an apocalyptic number.

It is an amenable number.

769906440 is an abundant number, since it is smaller than the sum of its proper divisors (1732290660).

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

769906440 is a wasteful number, since it uses less digits than its factorization.

769906440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138646 (or 2138639 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 769906440 is about 27747.1879656300. The cubic root of 769906440 is about 916.5285210368.

The spelling of 769906440 in words is "seven hundred sixty-nine million, nine hundred six thousand, four hundred forty".