97999943 has 2 divisors, whose sum is σ = 97999944. Its totient is φ = 97999942.

The previous prime is 97999927. The next prime is 97999949. The reversal of 97999943 is 34999979.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97999943 - 2⁴ = 97999927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97999949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48999971 + 48999972.

It is an arithmetic number, because the mean of its divisors is an integer number (48999972).

Almost surely, 2^97999943 is an apocalyptic number.

97999943 is a deficient number, since it is larger than the sum of its proper divisors (1).

97999943 is an equidigital number, since it uses as much as digits as its factorization.

97999943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4960116, while the sum is 59.

The square root of 97999943 is about 9899.4920576765. The cubic root of 97999943 is about 461.0435398198.

The spelling of 97999943 in words is "ninety-seven million, nine hundred ninety-nine thousand, nine hundred forty-three".