79477788 has 96 divisors (see below), whose sum is σ = 220824576. Its totient is φ = 21998592.

The previous prime is 79477763. The next prime is 79477807. The reversal of 79477788 is 88777497.

79477788 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

79477788 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60345 + ... + 61647.

It is an arithmetic number, because the mean of its divisors is an integer number (2300256).

Almost surely, 2^79477788 is an apocalyptic number.

79477788 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79477788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110412288).

79477788 is an abundant number, since it is smaller than the sum of its proper divisors (141346788).

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

79477788 is a wasteful number, since it uses less digits than its factorization.

79477788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363 (or 1361 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 57.

The square root of 79477788 is about 8915.0315759396. The cubic root of 79477788 is about 429.9473308484.

The spelling of 79477788 in words is "seventy-nine million, four hundred seventy-seven thousand, seven hundred eighty-eight".