977422 has 4 divisors (see below), whose sum is σ = 1466136. Its totient is φ = 488710.

The previous prime is 977413. The next prime is 977437. The reversal of 977422 is 224779.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

977422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 244354 + ... + 244357.

It is an arithmetic number, because the mean of its divisors is an integer number (366534).

2⁹⁷⁷⁴²² is an apocalyptic number.

977422 is a deficient number, since it is larger than the sum of its proper divisors (488714).

977422 is a wasteful number, since it uses less digits than its factorization.

977422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488713.

The product of its digits is 7056, while the sum is 31.

The square root of 977422 is about 988.6465495818. The cubic root of 977422 is about 99.2416637987.

The spelling of 977422 in words is "nine hundred seventy-seven thousand, four hundred twenty-two".