1008770440 has 16 divisors (see below), whose sum is σ = 2269733580. Its totient is φ = 403508160.

The previous prime is 1008770417. The next prime is 1008770453. The reversal of 1008770440 is 440778001.

It can be written as a sum of positive squares in 2 ways, for example, as 927446116 + 81324324 = 30454^2 + 9018^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12609591 + ... + 12609670.

Almost surely, 2^1008770440 is an apocalyptic number.

1008770440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1008770440 is an abundant number, since it is smaller than the sum of its proper divisors (1260963140).

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

1008770440 is a wasteful number, since it uses less digits than its factorization.

1008770440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25219272 (or 25219268 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 1008770440 is about 31761.1467047397. The cubic root of 1008770440 is about 1002.9149746664.

The spelling of 1008770440 in words is "one billion, eight million, seven hundred seventy thousand, four hundred forty".