787969540 has 12 divisors (see below), whose sum is σ = 1654736076. Its totient is φ = 315187808.

The previous prime is 787969537. The next prime is 787969541. The reversal of 787969540 is 45969787.

It can be written as a sum of positive squares in 2 ways, for example, as 88472836 + 699496704 = 9406^2 + 26448^2 .

It is not an unprimeable number, because it can be changed into a prime (787969541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19699219 + ... + 19699258.

It is an arithmetic number, because the mean of its divisors is an integer number (137894673).

Almost surely, 2^787969540 is an apocalyptic number.

It is an amenable number.

787969540 is an abundant number, since it is smaller than the sum of its proper divisors (866766536).

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

787969540 is a wasteful number, since it uses less digits than its factorization.

787969540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39398486 (or 39398484 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 55.

The square root of 787969540 is about 28070.7951437076. The cubic root of 787969540 is about 923.6408732251.

The spelling of 787969540 in words is "seven hundred eighty-seven million, nine hundred sixty-nine thousand, five hundred forty".