79440170 has 8 divisors (see below), whose sum is σ = 142992324. Its totient is φ = 31776064.

The previous prime is 79440149. The next prime is 79440173. The reversal of 79440170 is 7104497.

It can be written as a sum of positive squares in 2 ways, for example, as 73393489 + 6046681 = 8567^2 + 2459^2 .

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

It is not an unprimeable number, because it can be changed into a prime (79440173) 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, 3971999 + ... + 3972018.

Almost surely, 2^79440170 is an apocalyptic number.

79440170 is a deficient number, since it is larger than the sum of its proper divisors (63552154).

79440170 is a wasteful number, since it uses less digits than its factorization.

79440170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7944024.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 79440170 is about 8912.9215187838. The cubic root of 79440170 is about 429.8794866892.

The spelling of 79440170 in words is "seventy-nine million, four hundred forty thousand, one hundred seventy".