99459561 has 8 divisors (see below), whose sum is σ = 133208320. Its totient is φ = 66008592.

The previous prime is 99459553. The next prime is 99459593. The reversal of 99459561 is 16595499.

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

It is not a de Polignac number, because 99459561 - 2³ = 99459553 is a prime.

It is a super-3 number, since 3×99459561³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99459561.

It is not an unprimeable number, because it can be changed into a prime (99459511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73666 + ... + 75003.

It is an arithmetic number, because the mean of its divisors is an integer number (16651040).

Almost surely, 2^99459561 is an apocalyptic number.

It is an amenable number.

99459561 is a deficient number, since it is larger than the sum of its proper divisors (33748759).

99459561 is a wasteful number, since it uses less digits than its factorization.

99459561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148895.

The product of its digits is 437400, while the sum is 48.

The square root of 99459561 is about 9972.9414417212. The cubic root of 99459561 is about 463.3212072921.

The spelling of 99459561 in words is "ninety-nine million, four hundred fifty-nine thousand, five hundred sixty-one".