787943913 has 12 divisors (see below), whose sum is σ = 1098258000. Its totient is φ = 502455976.

The previous prime is 787943903. The next prime is 787943917. The reversal of 787943913 is 319349787.

It is not a de Polignac number, because 787943913 - 2⁵ = 787943881 is a prime.

It is a super-3 number, since 3×787943913³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (787943917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246663 + ... + 249836.

It is an arithmetic number, because the mean of its divisors is an integer number (91521500).

Almost surely, 2^787943913 is an apocalyptic number.

It is an amenable number.

787943913 is a deficient number, since it is larger than the sum of its proper divisors (310314087).

787943913 is a wasteful number, since it uses less digits than its factorization.

787943913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496548 (or 496525 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 787943913 is about 28070.3386691361. The cubic root of 787943913 is about 923.6308599779.

The spelling of 787943913 in words is "seven hundred eighty-seven million, nine hundred forty-three thousand, nine hundred thirteen".