772872369 has 4 divisors (see below), whose sum is σ = 1030496496. Its totient is φ = 515248244.

The previous prime is 772872337. The next prime is 772872407. The reversal of 772872369 is 963278277.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 772872369 - 2⁵ = 772872337 is a prime.

It is a super-2 number, since 2×772872369² = 1194663397527344322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (772872319) 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, 128812059 + ... + 128812064.

It is an arithmetic number, because the mean of its divisors is an integer number (257624124).

Almost surely, 2^772872369 is an apocalyptic number.

It is an amenable number.

772872369 is a deficient number, since it is larger than the sum of its proper divisors (257624127).

772872369 is a wasteful number, since it uses less digits than its factorization.

772872369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257624126.

The product of its digits is 1778112, while the sum is 51.

The square root of 772872369 is about 27800.5821701633. The cubic root of 772872369 is about 917.7039345522.

The spelling of 772872369 in words is "seven hundred seventy-two million, eight hundred seventy-two thousand, three hundred sixty-nine".