79550947 has 16 divisors (see below), whose sum is σ = 94433472. Its totient is φ = 65594880.

The previous prime is 79550941. The next prime is 79550953. The reversal of 79550947 is 74905597.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79550941) and next prime (79550953).

It is a de Polignac number, because none of the positive numbers 2^k-79550947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79550897 and 79550906.

It is not an unprimeable number, because it can be changed into a prime (79550941) 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, 19053 + ... + 22849.

It is an arithmetic number, because the mean of its divisors is an integer number (5902092).

Almost surely, 2^79550947 is an apocalyptic number.

79550947 is a deficient number, since it is larger than the sum of its proper divisors (14882525).

79550947 is a wasteful number, since it uses less digits than its factorization.

79550947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3918.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 79550947 is about 8919.1337583871. The cubic root of 79550947 is about 430.0792120161.

The spelling of 79550947 in words is "seventy-nine million, five hundred fifty thousand, nine hundred forty-seven".