79086436 has 72 divisors (see below), whose sum is σ = 172053504. Its totient is φ = 31354560.

The previous prime is 79086433. The next prime is 79086461. The reversal of 79086436 is 63468097.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 79086392 and 79086401.

It is not an unprimeable number, because it can be changed into a prime (79086433) 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 23 ways as a sum of consecutive naturals, for example, 206301 + ... + 206683.

It is an arithmetic number, because the mean of its divisors is an integer number (2389632).

Almost surely, 2^79086436 is an apocalyptic number.

79086436 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

79086436 is an abundant number, since it is smaller than the sum of its proper divisors (92967068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79086436 is a wasteful number, since it uses less digits than its factorization.

79086436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 79086436 is about 8893.0554929113. The cubic root of 79086436 is about 429.2404764161.

The spelling of 79086436 in words is "seventy-nine million, eighty-six thousand, four hundred thirty-six".