977922 has 36 divisors (see below), whose sum is σ = 2334150. Its totient is φ = 295680.

The previous prime is 977897. The next prime is 977923. The reversal of 977922 is 229779.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 184041 = 891^2 + 429^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 977922.

It is not an unprimeable number, because it can be changed into a prime (977923) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1954 + ... + 2402.

2⁹⁷⁷⁹²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167075).

977922 is an abundant number, since it is smaller than the sum of its proper divisors (1356228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

977922 is a wasteful number, since it uses less digits than its factorization.

977922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 465 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 977922 is about 988.8993882089. The cubic root of 977922 is about 99.2585832641.

It can be divided in two parts, 9779 and 22, that added together give a square (9801 = 99²).

The spelling of 977922 in words is "nine hundred seventy-seven thousand, nine hundred twenty-two".