79880135 has 4 divisors (see below), whose sum is σ = 95856168. Its totient is φ = 63904104.

The previous prime is 79880131. The next prime is 79880189. The reversal of 79880135 is 53108897.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53108897 = 743 ⋅71479.

It is a cyclic number.

It is not a de Polignac number, because 79880135 - 2² = 79880131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79880092 and 79880101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79880131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7988009 + ... + 7988018.

It is an arithmetic number, because the mean of its divisors is an integer number (23964042).

Almost surely, 2^79880135 is an apocalyptic number.

79880135 is a deficient number, since it is larger than the sum of its proper divisors (15976033).

79880135 is a wasteful number, since it uses less digits than its factorization.

79880135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15976032.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 79880135 is about 8937.5687409944. The cubic root of 79880135 is about 430.6716293422.

The spelling of 79880135 in words is "seventy-nine million, eight hundred eighty thousand, one hundred thirty-five".