79970 has 16 divisors (see below), whose sum is σ = 157248. Its totient is φ = 29040.

The previous prime is 79967. The next prime is 79973. The reversal of 79970 is 7997.

It is an interprime number because it is at equal distance from previous prime (79967) and next prime (79973).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 473.

It is an arithmetic number, because the mean of its divisors is an integer number (9828).

2⁷⁹⁹⁷⁰ is an apocalyptic number.

79970 is a deficient number, since it is larger than the sum of its proper divisors (77278).

79970 is a wasteful number, since it uses less digits than its factorization.

79970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745.

The product of its (nonzero) digits is 3969, while the sum is 32.

The square root of 79970 is about 282.7896744933. The cubic root of 79970 is about 43.0833070405.

The spelling of 79970 in words is "seventy-nine thousand, nine hundred seventy".