77933901 has 4 divisors (see below), whose sum is σ = 103911872. Its totient is φ = 51955932.

The previous prime is 77933897. The next prime is 77933927. The reversal of 77933901 is 10933977.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10933977 = 3 ⋅3644659.

It is not a de Polignac number, because 77933901 - 2² = 77933897 is a prime.

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 77933901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77933941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12988981 + ... + 12988986.

It is an arithmetic number, because the mean of its divisors is an integer number (25977968).

Almost surely, 2^77933901 is an apocalyptic number.

It is an amenable number.

77933901 is a deficient number, since it is larger than the sum of its proper divisors (25977971).

77933901 is a wasteful number, since it uses less digits than its factorization.

77933901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25977970.

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

The square root of 77933901 is about 8828.0179542183. The cubic root of 77933901 is about 427.1451424092.

The spelling of 77933901 in words is "seventy-seven million, nine hundred thirty-three thousand, nine hundred one".