77404099 has 2 divisors, whose sum is σ = 77404100. Its totient is φ = 77404098.

The previous prime is 77404097. The next prime is 77404127. The reversal of 77404099 is 99040477.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77404099 - 2¹ = 77404097 is a prime.

Together with 77404097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (77404091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38702049 + 38702050.

It is an arithmetic number, because the mean of its divisors is an integer number (38702050).

Almost surely, 2^77404099 is an apocalyptic number.

77404099 is a deficient number, since it is larger than the sum of its proper divisors (1).

77404099 is an equidigital number, since it uses as much as digits as its factorization.

77404099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 77404099 is about 8797.9599339847. The cubic root of 77404099 is about 426.1750164366.

The spelling of 77404099 in words is "seventy-seven million, four hundred four thousand, ninety-nine".