99460721 has 2 divisors, whose sum is σ = 99460722. Its totient is φ = 99460720.

The previous prime is 99460703. The next prime is 99460723. The reversal of 99460721 is 12706499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58308496 + 41152225 = 7636^2 + 6415^2 .

It is a cyclic number.

It is not a de Polignac number, because 99460721 - 2⁶ = 99460657 is a prime.

Together with 99460723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99460723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49730360 + 49730361.

It is an arithmetic number, because the mean of its divisors is an integer number (49730361).

Almost surely, 2^99460721 is an apocalyptic number.

It is an amenable number.

99460721 is a deficient number, since it is larger than the sum of its proper divisors (1).

99460721 is an equidigital number, since it uses as much as digits as its factorization.

99460721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 99460721 is about 9972.9995989171. Note that the first 3 decimals coincide. The cubic root of 99460721 is about 463.3230085284.

The spelling of 99460721 in words is "ninety-nine million, four hundred sixty thousand, seven hundred twenty-one".