99901517 has 8 divisors (see below), whose sum is σ = 103389792. Its totient is φ = 96454800.

The previous prime is 99901507. The next prime is 99901541. The reversal of 99901517 is 71510999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99901517 is a prime.

It is a Duffinian number.

99901517 is a modest number, since divided by 1517 gives 999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99901507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5459 + ... + 15152.

It is an arithmetic number, because the mean of its divisors is an integer number (12923724).

Almost surely, 2^99901517 is an apocalyptic number.

It is an amenable number.

99901517 is a deficient number, since it is larger than the sum of its proper divisors (3488275).

99901517 is a wasteful number, since it uses less digits than its factorization.

99901517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20779.

The product of its (nonzero) digits is 25515, while the sum is 41.

The square root of 99901517 is about 9995.0746370400. The cubic root of 99901517 is about 464.0064607825.

The spelling of 99901517 in words is "ninety-nine million, nine hundred one thousand, five hundred seventeen".