97442239 has 2 divisors, whose sum is σ = 97442240. Its totient is φ = 97442238.

The previous prime is 97442227. The next prime is 97442251. The reversal of 97442239 is 93224479.

It is a balanced prime because it is at equal distance from previous prime (97442227) and next prime (97442251).

It is an emirp because it is prime and its reverse (93224479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97442239 - 2⁹ = 97441727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97442339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48721119 + 48721120.

It is an arithmetic number, because the mean of its divisors is an integer number (48721120).

Almost surely, 2^97442239 is an apocalyptic number.

97442239 is a deficient number, since it is larger than the sum of its proper divisors (1).

97442239 is an equidigital number, since it uses as much as digits as its factorization.

97442239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 97442239 is about 9871.2835538242. The cubic root of 97442239 is about 460.1672973713.

The spelling of 97442239 in words is "ninety-seven million, four hundred forty-two thousand, two hundred thirty-nine".