97409149 has 2 divisors, whose sum is σ = 97409150. Its totient is φ = 97409148.

The previous prime is 97409119. The next prime is 97409159. The reversal of 97409149 is 94190479.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49702500 + 47706649 = 7050^2 + 6907^2 .

It is a cyclic number.

It is not a de Polignac number, because 97409149 - 2⁷ = 97409021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97409119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48704574 + 48704575.

It is an arithmetic number, because the mean of its divisors is an integer number (48704575).

Almost surely, 2^97409149 is an apocalyptic number.

It is an amenable number.

97409149 is a deficient number, since it is larger than the sum of its proper divisors (1).

97409149 is an equidigital number, since it uses as much as digits as its factorization.

97409149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 97409149 is about 9869.6073376807. The cubic root of 97409149 is about 460.1152027151.

The spelling of 97409149 in words is "ninety-seven million, four hundred nine thousand, one hundred forty-nine".