977939142 has 8 divisors (see below), whose sum is σ = 1955878296. Its totient is φ = 325979712.

The previous prime is 977939099. The next prime is 977939143. The reversal of 977939142 is 241939779.

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

977939142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977939143) 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, 81494923 + ... + 81494934.

It is an arithmetic number, because the mean of its divisors is an integer number (244484787).

Almost surely, 2^977939142 is an apocalyptic number.

977939142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

977939142 is a wasteful number, since it uses less digits than its factorization.

977939142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162989862.

The product of its digits is 857304, while the sum is 51.

The square root of 977939142 is about 31272.0185149600. The cubic root of 977939142 is about 992.5916322879.

The spelling of 977939142 in words is "nine hundred seventy-seven million, nine hundred thirty-nine thousand, one hundred forty-two".