77093931 has 8 divisors (see below), whose sum is σ = 106107904. Its totient is φ = 49737960.

The previous prime is 77093927. The next prime is 77093957. The reversal of 77093931 is 13939077.

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

It is not a de Polignac number, because 77093931 - 2² = 77093927 is a prime.

It is a super-2 number, since 2×77093931² = 11886948394065522, which contains 22 as substring.

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 77093931.

It is not an unprimeable number, because it can be changed into a prime (77093921) 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, 414391 + ... + 414576.

It is an arithmetic number, because the mean of its divisors is an integer number (13263488).

Almost surely, 2^77093931 is an apocalyptic number.

77093931 is a deficient number, since it is larger than the sum of its proper divisors (29013973).

77093931 is a wasteful number, since it uses less digits than its factorization.

77093931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829001.

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

The square root of 77093931 is about 8780.3149715714. The cubic root of 77093931 is about 425.6050086888.

The spelling of 77093931 in words is "seventy-seven million, ninety-three thousand, nine hundred thirty-one".