79739760 has 80 divisors (see below), whose sum is σ = 250233984. Its totient is φ = 21002496.

The previous prime is 79739753. The next prime is 79739767. The reversal of 79739760 is 6793797.

It is an interprime number because it is at equal distance from previous prime (79739753) and next prime (79739767).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79739767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17919 + ... + 21921.

Almost surely, 2^79739760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79739760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125116992).

79739760 is an abundant number, since it is smaller than the sum of its proper divisors (170494224).

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

79739760 is a wasteful number, since it uses less digits than its factorization.

79739760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102 (or 4096 counting only the distinct ones).

The product of its (nonzero) digits is 500094, while the sum is 48.

The square root of 79739760 is about 8929.7122014094. The cubic root of 79739760 is about 430.4192053913.

The spelling of 79739760 in words is "seventy-nine million, seven hundred thirty-nine thousand, seven hundred sixty".