79478837 has 4 divisors (see below), whose sum is σ = 79656300. Its totient is φ = 79301376.

The previous prime is 79478831. The next prime is 79478857. The reversal of 79478837 is 73887497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73887497 = 157 ⋅470621.

It can be written as a sum of positive squares in 2 ways, for example, as 15062161 + 64416676 = 3881^2 + 8026^2 .

It is a cyclic number.

It is not a de Polignac number, because 79478837 - 2¹⁸ = 79216693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79478831) 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, 88058 + ... + 88955.

It is an arithmetic number, because the mean of its divisors is an integer number (19914075).

Almost surely, 2^79478837 is an apocalyptic number.

It is an amenable number.

79478837 is a deficient number, since it is larger than the sum of its proper divisors (177463).

79478837 is a wasteful number, since it uses less digits than its factorization.

79478837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177462.

The product of its digits is 2370816, while the sum is 53.

The square root of 79478837 is about 8915.0904089639. The cubic root of 79478837 is about 429.9492224158.

The spelling of 79478837 in words is "seventy-nine million, four hundred seventy-eight thousand, eight hundred thirty-seven".