976863493 has 2 divisors, whose sum is σ = 976863494. Its totient is φ = 976863492.

The previous prime is 976863487. The next prime is 976863509. The reversal of 976863493 is 394368679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 959574529 + 17288964 = 30977^2 + 4158^2 .

It is an emirp because it is prime and its reverse (394368679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 976863493 - 2¹³ = 976855301 is a prime.

It is a super-2 number, since 2×976863493² = 1908524567912322098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (976863403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488431746 + 488431747.

It is an arithmetic number, because the mean of its divisors is an integer number (488431747).

Almost surely, 2^976863493 is an apocalyptic number.

It is an amenable number.

976863493 is a deficient number, since it is larger than the sum of its proper divisors (1).

976863493 is an equidigital number, since it uses as much as digits as its factorization.

976863493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 55.

The square root of 976863493 is about 31254.8155169727. The cubic root of 976863493 is about 992.2275769521.

The spelling of 976863493 in words is "nine hundred seventy-six million, eight hundred sixty-three thousand, four hundred ninety-three".