77229377 has 4 divisors (see below), whose sum is σ = 80587200. Its totient is φ = 73871556.

The previous prime is 77229367. The next prime is 77229379. The reversal of 77229377 is 77392277.

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.

It is a cyclic number.

It is not a de Polignac number, because 77229377 - 2⁸ = 77229121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77229379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1678877 + ... + 1678922.

It is an arithmetic number, because the mean of its divisors is an integer number (20146800).

Almost surely, 2^77229377 is an apocalyptic number.

It is an amenable number.

77229377 is a deficient number, since it is larger than the sum of its proper divisors (3357823).

77229377 is a wasteful number, since it uses less digits than its factorization.

77229377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357822.

The product of its digits is 259308, while the sum is 44.

The square root of 77229377 is about 8788.0246358326. The cubic root of 77229377 is about 425.8541107411.

The spelling of 77229377 in words is "seventy-seven million, two hundred twenty-nine thousand, three hundred seventy-seven".