77769393 has 8 divisors (see below), whose sum is σ = 111668928. Its totient is φ = 47858064.

The previous prime is 77769383. The next prime is 77769397. The reversal of 77769393 is 39396777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77769393 - 2⁸ = 77769137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77769397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 997005 + ... + 997082.

It is an arithmetic number, because the mean of its divisors is an integer number (13958616).

Almost surely, 2^77769393 is an apocalyptic number.

It is an amenable number.

77769393 is a deficient number, since it is larger than the sum of its proper divisors (33899535).

77769393 is a wasteful number, since it uses less digits than its factorization.

77769393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994103.

The product of its digits is 1500282, while the sum is 51.

The square root of 77769393 is about 8818.6956518524. The cubic root of 77769393 is about 426.8443820088.

The spelling of 77769393 in words is "seventy-seven million, seven hundred sixty-nine thousand, three hundred ninety-three".