77995393 has 8 divisors (see below), whose sum is σ = 90599360. Its totient is φ = 65756880.

The previous prime is 77995367. The next prime is 77995409. The reversal of 77995393 is 39359977.

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

It is not a de Polignac number, because 77995393 - 2¹⁷ = 77864321 is a prime.

It is the 8832-nd Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77995393.

It is not an unprimeable number, because it can be changed into a prime (77995343) by changing a digit.

It is a nontrivial repunit in base 8831.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90903 + ... + 91756.

It is an arithmetic number, because the mean of its divisors is an integer number (11324920).

Almost surely, 2^77995393 is an apocalyptic number.

It is an amenable number.

77995393 is a deficient number, since it is larger than the sum of its proper divisors (12603967).

77995393 is a wasteful number, since it uses less digits than its factorization.

77995393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182727.

The product of its digits is 1607445, while the sum is 52.

The square root of 77995393 is about 8831.5000424616. The cubic root of 77995393 is about 427.2574559792.

The spelling of 77995393 in words is "seventy-seven million, nine hundred ninety-five thousand, three hundred ninety-three".