79487881 has 8 divisors (see below), whose sum is σ = 87557184. Its totient is φ = 71559120.

The previous prime is 79487873. The next prime is 79487893. The reversal of 79487881 is 18878497.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79487881 - 2³ = 79487873 is a prime.

It is a super-2 number, since 2×79487881² = 12636646451740322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79487861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33946 + ... + 36211.

It is an arithmetic number, because the mean of its divisors is an integer number (10944648).

Almost surely, 2^79487881 is an apocalyptic number.

It is an amenable number.

79487881 is a deficient number, since it is larger than the sum of its proper divisors (8069303).

79487881 is a wasteful number, since it uses less digits than its factorization.

79487881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70271.

The product of its digits is 903168, while the sum is 52.

The square root of 79487881 is about 8915.5976243884. The cubic root of 79487881 is about 429.9655299572.

The spelling of 79487881 in words is "seventy-nine million, four hundred eighty-seven thousand, eight hundred eighty-one".