772989 has 8 divisors (see below), whose sum is σ = 1177920. Its totient is φ = 441696.

The previous prime is 772987. The next prime is 772991. The reversal of 772989 is 989277.

It is an interprime number because it is at equal distance from previous prime (772987) and next prime (772991).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 772989 - 2¹ = 772987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 772989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18384 + ... + 18425.

It is an arithmetic number, because the mean of its divisors is an integer number (147240).

2⁷⁷²⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

772989 is a deficient number, since it is larger than the sum of its proper divisors (404931).

772989 is a wasteful number, since it uses less digits than its factorization.

772989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36819.

The product of its digits is 63504, while the sum is 42.

The square root of 772989 is about 879.1979299339. The cubic root of 772989 is about 91.7750094543.

The spelling of 772989 in words is "seven hundred seventy-two thousand, nine hundred eighty-nine".