97811039 has 2 divisors, whose sum is σ = 97811040. Its totient is φ = 97811038.

The previous prime is 97811033. The next prime is 97811057. The reversal of 97811039 is 93011879.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97811039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97810993 and 97811011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97811033) 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, 48905519 + 48905520.

It is an arithmetic number, because the mean of its divisors is an integer number (48905520).

Almost surely, 2^97811039 is an apocalyptic number.

97811039 is a deficient number, since it is larger than the sum of its proper divisors (1).

97811039 is an equidigital number, since it uses as much as digits as its factorization.

97811039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 97811039 is about 9889.9463598141. The cubic root of 97811039 is about 460.7471145155.

The spelling of 97811039 in words is "ninety-seven million, eight hundred eleven thousand, thirty-nine".