78954799 has 36 divisors (see below), whose sum is σ = 103542096. Its totient is φ = 58924800.

The previous prime is 78954793. The next prime is 78954809. The reversal of 78954799 is 99745987.

It is a happy number.

It is not a de Polignac number, because 78954799 - 2⁵ = 78954767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78954793) 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 35 ways as a sum of consecutive naturals, for example, 813919 + ... + 814015.

Almost surely, 2^78954799 is an apocalyptic number.

78954799 is a deficient number, since it is larger than the sum of its proper divisors (24587297).

78954799 is a wasteful number, since it uses less digits than its factorization.

78954799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 146 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 58.

The square root of 78954799 is about 8885.6512985825. The cubic root of 78954799 is about 429.0021915295.

The spelling of 78954799 in words is "seventy-eight million, nine hundred fifty-four thousand, seven hundred ninety-nine".