99859490 has 16 divisors (see below), whose sum is σ = 183572352. Its totient is φ = 39093744.

The previous prime is 99859489. The next prime is 99859493. The reversal of 99859490 is 9495899.

It is not an unprimeable number, because it can be changed into a prime (99859493) 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, 105764 + ... + 106703.

It is an arithmetic number, because the mean of its divisors is an integer number (11473272).

Almost surely, 2^99859490 is an apocalyptic number.

99859490 is a deficient number, since it is larger than the sum of its proper divisors (83712862).

99859490 is a wasteful number, since it uses less digits than its factorization.

99859490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212521.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The square root of 99859490 is about 9992.9720303822. The cubic root of 99859490 is about 463.9413849114.

The spelling of 99859490 in words is "ninety-nine million, eight hundred fifty-nine thousand, four hundred ninety".