791523973 has 4 divisors (see below), whose sum is σ = 793792300. Its totient is φ = 789255648.

The previous prime is 791523949. The next prime is 791523979. The reversal of 791523973 is 379325197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 379325197 = 5849 ⋅64853.

It can be written as a sum of positive squares in 2 ways, for example, as 628655329 + 162868644 = 25073^2 + 12762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791523973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791523979) 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, 1133640 + ... + 1134337.

It is an arithmetic number, because the mean of its divisors is an integer number (198448075).

Almost surely, 2^791523973 is an apocalyptic number.

It is an amenable number.

791523973 is a deficient number, since it is larger than the sum of its proper divisors (2268327).

791523973 is a wasteful number, since it uses less digits than its factorization.

791523973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268326.

The product of its digits is 357210, while the sum is 46.

The square root of 791523973 is about 28134.0358462841. The cubic root of 791523973 is about 925.0276000530.

The spelling of 791523973 in words is "seven hundred ninety-one million, five hundred twenty-three thousand, nine hundred seventy-three".