977121 has 12 divisors (see below), whose sum is σ = 1422720. Its totient is φ = 646200.

The previous prime is 977107. The next prime is 977147. The reversal of 977121 is 121779.

It is not a de Polignac number, because 977121 - 2⁶ = 977057 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

977121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (977191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1000 + ... + 1718.

It is an arithmetic number, because the mean of its divisors is an integer number (118560).

2⁹⁷⁷¹²¹ is an apocalyptic number.

It is an amenable number.

977121 is a deficient number, since it is larger than the sum of its proper divisors (445599).

977121 is a wasteful number, since it uses less digits than its factorization.

977121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 873 counting only the distinct ones).

The product of its digits is 882, while the sum is 27.

The square root of 977121 is about 988.4943095436. The cubic root of 977121 is about 99.2314754980.

The spelling of 977121 in words is "nine hundred seventy-seven thousand, one hundred twenty-one".