79290973 has 4 divisors (see below), whose sum is σ = 79577500. Its totient is φ = 79004448.

The previous prime is 79290947. The next prime is 79290989. The reversal of 79290973 is 37909297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37909297 = 41 ⋅924617.

It can be written as a sum of positive squares in 2 ways, for example, as 12264004 + 67026969 = 3502^2 + 8187^2 .

It is a cyclic number.

It is not a de Polignac number, because 79290973 - 2¹⁷ = 79159901 is a prime.

It is a super-3 number, since 3×79290973³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79290943) 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, 142848 + ... + 143401.

It is an arithmetic number, because the mean of its divisors is an integer number (19894375).

Almost surely, 2^79290973 is an apocalyptic number.

It is an amenable number.

79290973 is a deficient number, since it is larger than the sum of its proper divisors (286527).

79290973 is a wasteful number, since it uses less digits than its factorization.

79290973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286526.

The product of its (nonzero) digits is 214326, while the sum is 46.

The square root of 79290973 is about 8904.5478829641. The cubic root of 79290973 is about 429.6101983952.

The spelling of 79290973 in words is "seventy-nine million, two hundred ninety thousand, nine hundred seventy-three".