78799406 has 16 divisors (see below), whose sum is σ = 135450240. Its totient is φ = 33679800.

The previous prime is 78799387. The next prime is 78799411. The reversal of 78799406 is 60499787.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2120 + ... + 12731.

It is an arithmetic number, because the mean of its divisors is an integer number (8465640).

Almost surely, 2^78799406 is an apocalyptic number.

78799406 is a deficient number, since it is larger than the sum of its proper divisors (56650834).

78799406 is a wasteful number, since it uses less digits than its factorization.

78799406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15239.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 78799406 is about 8876.9029509171. The cubic root of 78799406 is about 428.7205632197.

The spelling of 78799406 in words is "seventy-eight million, seven hundred ninety-nine thousand, four hundred six".