9976893431 has 2 divisors, whose sum is σ = 9976893432. Its totient is φ = 9976893430.

The previous prime is 9976893427. The next prime is 9976893439. The reversal of 9976893431 is 1343986799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9976893431 - 2² = 9976893427 is a prime.

It is a super-2 number, since 2×9976893431² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9976893439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4988446715 + 4988446716.

It is an arithmetic number, because the mean of its divisors is an integer number (4988446716).

Almost surely, 2^9976893431 is an apocalyptic number.

9976893431 is a deficient number, since it is larger than the sum of its proper divisors (1).

9976893431 is an equidigital number, since it uses as much as digits as its factorization.

9976893431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 59.

The square root of 9976893431 is about 99884.4003385914. The cubic root of 9976893431 is about 2152.7740238370.

The spelling of 9976893431 in words is "nine billion, nine hundred seventy-six million, eight hundred ninety-three thousand, four hundred thirty-one".