77093391 has 8 divisors (see below), whose sum is σ = 102881584. Its totient is φ = 51350400.

The previous prime is 77093381. The next prime is 77093441. The reversal of 77093391 is 19339077.

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

It is not a de Polignac number, because 77093391 - 2⁶ = 77093327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77093381) 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, 7096 + ... + 14301.

It is an arithmetic number, because the mean of its divisors is an integer number (12860198).

Almost surely, 2^77093391 is an apocalyptic number.

77093391 is a deficient number, since it is larger than the sum of its proper divisors (25788193).

77093391 is a wasteful number, since it uses less digits than its factorization.

77093391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22601.

The product of its (nonzero) digits is 35721, while the sum is 39.

The square root of 77093391 is about 8780.2842209122. The cubic root of 77093391 is about 425.6040149779.

The spelling of 77093391 in words is "seventy-seven million, ninety-three thousand, three hundred ninety-one".