97017839 has 2 divisors, whose sum is σ = 97017840. Its totient is φ = 97017838.

The previous prime is 97017799. The next prime is 97017853. The reversal of 97017839 is 93871079.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97017839 is a prime.

It is a super-2 number, since 2×97017839² = 18824922168459842, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97017839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97016839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48508919 + 48508920.

It is an arithmetic number, because the mean of its divisors is an integer number (48508920).

Almost surely, 2^97017839 is an apocalyptic number.

97017839 is a deficient number, since it is larger than the sum of its proper divisors (1).

97017839 is an equidigital number, since it uses as much as digits as its factorization.

97017839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 97017839 is about 9849.7633981736. The cubic root of 97017839 is about 459.4982541159.

The spelling of 97017839 in words is "ninety-seven million, seventeen thousand, eight hundred thirty-nine".