977939143 has 2 divisors, whose sum is σ = 977939144. Its totient is φ = 977939142.

The previous prime is 977939099. The next prime is 977939167. The reversal of 977939143 is 341939779.

It is a happy number.

977939143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (341939779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 977939143 - 2⁹ = 977938631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977939173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488969571 + 488969572.

It is an arithmetic number, because the mean of its divisors is an integer number (488969572).

Almost surely, 2^977939143 is an apocalyptic number.

977939143 is a deficient number, since it is larger than the sum of its proper divisors (1).

977939143 is an equidigital number, since it uses as much as digits as its factorization.

977939143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1285956, while the sum is 52.

The square root of 977939143 is about 31272.0185309487. The cubic root of 977939143 is about 992.5916326262.

The spelling of 977939143 in words is "nine hundred seventy-seven million, nine hundred thirty-nine thousand, one hundred forty-three".