787478393 has 24 divisors (see below), whose sum is σ = 907486272. Its totient is φ = 678873888.

The previous prime is 787478333. The next prime is 787478411. The reversal of 787478393 is 393874787.

It is not a de Polignac number, because 787478393 - 2¹² = 787474297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (787478303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294380 + ... + 297042.

It is an arithmetic number, because the mean of its divisors is an integer number (37811928).

Almost surely, 2^787478393 is an apocalyptic number.

It is an amenable number.

787478393 is a deficient number, since it is larger than the sum of its proper divisors (120007879).

787478393 is a wasteful number, since it uses less digits than its factorization.

787478393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765 (or 2742 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 56.

The square root of 787478393 is about 28062.0454172535. The cubic root of 787478393 is about 923.4489293716.

The spelling of 787478393 in words is "seven hundred eighty-seven million, four hundred seventy-eight thousand, three hundred ninety-three".