977742343 has 4 divisors (see below), whose sum is σ = 993770968. Its totient is φ = 961713720.

The previous prime is 977742329. The next prime is 977742347. The reversal of 977742343 is 343247779.

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

It is a cyclic number.

It is not a de Polignac number, because 977742343 - 2²⁵ = 944187911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 977742293 and 977742302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977742347) 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, 8014221 + ... + 8014342.

It is an arithmetic number, because the mean of its divisors is an integer number (248442742).

Almost surely, 2^977742343 is an apocalyptic number.

977742343 is a deficient number, since it is larger than the sum of its proper divisors (16028625).

977742343 is a wasteful number, since it uses less digits than its factorization.

977742343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16028624.

The product of its digits is 889056, while the sum is 46.

The square root of 977742343 is about 31268.8717896889. The cubic root of 977742343 is about 992.5250452727.

The spelling of 977742343 in words is "nine hundred seventy-seven million, seven hundred forty-two thousand, three hundred forty-three".