772399 has 4 divisors (see below), whose sum is σ = 791280. Its totient is φ = 753520.

The previous prime is 772393. The next prime is 772403. The reversal of 772399 is 993277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993277 = 401 ⋅2477.

It is a cyclic number.

It is not a de Polignac number, because 772399 - 2³ = 772391 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 (772391) 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, 9379 + ... + 9460.

It is an arithmetic number, because the mean of its divisors is an integer number (197820).

2⁷⁷²³⁹⁹ is an apocalyptic number.

772399 is a deficient number, since it is larger than the sum of its proper divisors (18881).

772399 is a wasteful number, since it uses less digits than its factorization.

772399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18880.

The product of its digits is 23814, while the sum is 37.

The square root of 772399 is about 878.8623327917. The cubic root of 772399 is about 91.7516537801.

The spelling of 772399 in words is "seven hundred seventy-two thousand, three hundred ninety-nine".