97749901 has 2 divisors, whose sum is σ = 97749902. Its totient is φ = 97749900.

The previous prime is 97749833. The next prime is 97749919. The reversal of 97749901 is 10994779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81468676 + 16281225 = 9026^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 97749901 - 2¹⁹ = 97225613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97749991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48874950 + 48874951.

It is an arithmetic number, because the mean of its divisors is an integer number (48874951).

Almost surely, 2^97749901 is an apocalyptic number.

It is an amenable number.

97749901 is a deficient number, since it is larger than the sum of its proper divisors (1).

97749901 is an equidigital number, since it uses as much as digits as its factorization.

97749901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 97749901 is about 9886.8549599961. The cubic root of 97749901 is about 460.6510959455.

The spelling of 97749901 in words is "ninety-seven million, seven hundred forty-nine thousand, nine hundred one".