97700839 has 2 divisors, whose sum is σ = 97700840. Its totient is φ = 97700838.

The previous prime is 97700761. The next prime is 97700879. The reversal of 97700839 is 93800779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97700839 - 2¹⁹ = 97176551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97700795 and 97700804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97700879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48850419 + 48850420.

It is an arithmetic number, because the mean of its divisors is an integer number (48850420).

Almost surely, 2^97700839 is an apocalyptic number.

97700839 is a deficient number, since it is larger than the sum of its proper divisors (1).

97700839 is an equidigital number, since it uses as much as digits as its factorization.

97700839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 97700839 is about 9884.3734753397. The cubic root of 97700839 is about 460.5740140387.

The spelling of 97700839 in words is "ninety-seven million, seven hundred thousand, eight hundred thirty-nine".