79378387 has 16 divisors (see below), whose sum is σ = 89071488. Its totient is φ = 70116480.

The previous prime is 79378381. The next prime is 79378417. The reversal of 79378387 is 78387397.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79378387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79378381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133563 + ... + 134155.

It is an arithmetic number, because the mean of its divisors is an integer number (5566968).

Almost surely, 2^79378387 is an apocalyptic number.

79378387 is a deficient number, since it is larger than the sum of its proper divisors (9693101).

79378387 is a wasteful number, since it uses less digits than its factorization.

79378387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930.

The product of its digits is 1778112, while the sum is 52.

The square root of 79378387 is about 8909.4549215987. The cubic root of 79378387 is about 429.7680144008.

The spelling of 79378387 in words is "seventy-nine million, three hundred seventy-eight thousand, three hundred eighty-seven".