99424961 has 2 divisors, whose sum is σ = 99424962. Its totient is φ = 99424960.

The previous prime is 99424951. The next prime is 99424981. The reversal of 99424961 is 16942499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51552400 + 47872561 = 7180^2 + 6919^2 .

It is a cyclic number.

It is not a de Polignac number, because 99424961 - 2¹⁴ = 99408577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (99424951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49712480 + 49712481.

It is an arithmetic number, because the mean of its divisors is an integer number (49712481).

Almost surely, 2^99424961 is an apocalyptic number.

It is an amenable number.

99424961 is a deficient number, since it is larger than the sum of its proper divisors (1).

99424961 is an equidigital number, since it uses as much as digits as its factorization.

99424961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 99424961 is about 9971.2065969972. The cubic root of 99424961 is about 463.2674743212.

The spelling of 99424961 in words is "ninety-nine million, four hundred twenty-four thousand, nine hundred sixty-one".