97831879 has 2 divisors, whose sum is σ = 97831880. Its totient is φ = 97831878.

The previous prime is 97831873. The next prime is 97831883. The reversal of 97831879 is 97813879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97831879 - 2⁵ = 97831847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97831873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48915939 + 48915940.

It is an arithmetic number, because the mean of its divisors is an integer number (48915940).

Almost surely, 2^97831879 is an apocalyptic number.

97831879 is a deficient number, since it is larger than the sum of its proper divisors (1).

97831879 is an equidigital number, since it uses as much as digits as its factorization.

97831879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 52.

The square root of 97831879 is about 9890.9998988980. Note that the first 3 decimals coincide. The cubic root of 97831879 is about 460.7798350485.

The spelling of 97831879 in words is "ninety-seven million, eight hundred thirty-one thousand, eight hundred seventy-nine".