77869923 has 32 divisors (see below), whose sum is σ = 114032640. Its totient is φ = 47083680.

The previous prime is 77869921. The next prime is 77869931. The reversal of 77869923 is 32996877.

It is not a de Polignac number, because 77869923 - 2¹ = 77869921 is a prime.

It is a super-4 number, since 4×77869923⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (77869921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224236 + ... + 224582.

It is an arithmetic number, because the mean of its divisors is an integer number (3563520).

Almost surely, 2^77869923 is an apocalyptic number.

77869923 is a deficient number, since it is larger than the sum of its proper divisors (36162717).

77869923 is a wasteful number, since it uses less digits than its factorization.

77869923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527.

The product of its digits is 1143072, while the sum is 51.

The square root of 77869923 is about 8824.3936335592. The cubic root of 77869923 is about 427.0282254961.

The spelling of 77869923 in words is "seventy-seven million, eight hundred sixty-nine thousand, nine hundred twenty-three".