97559939 has 2 divisors, whose sum is σ = 97559940. Its totient is φ = 97559938.

The previous prime is 97559929. The next prime is 97559963. The reversal of 97559939 is 93995579.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97559939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97559929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48779969 + 48779970.

It is an arithmetic number, because the mean of its divisors is an integer number (48779970).

Almost surely, 2^97559939 is an apocalyptic number.

97559939 is a deficient number, since it is larger than the sum of its proper divisors (1).

97559939 is an equidigital number, since it uses as much as digits as its factorization.

97559939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3444525, while the sum is 56.

The square root of 97559939 is about 9877.2434919870. The cubic root of 97559939 is about 460.3525007590.

The spelling of 97559939 in words is "ninety-seven million, five hundred fifty-nine thousand, nine hundred thirty-nine".