99871490 has 16 divisors (see below), whose sum is σ = 184154040. Its totient is φ = 38974080.

The previous prime is 99871477. The next prime is 99871507. The reversal of 99871490 is 9417899.

It can be written as a sum of positive squares in 4 ways, for example, as 21743569 + 78127921 = 4663^2 + 8839^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121385 + ... + 122204.

Almost surely, 2^99871490 is an apocalyptic number.

99871490 is a deficient number, since it is larger than the sum of its proper divisors (84282550).

99871490 is a wasteful number, since it uses less digits than its factorization.

99871490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243637.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 99871490 is about 9993.5724343200. The cubic root of 99871490 is about 463.9599679345.

The spelling of 99871490 in words is "ninety-nine million, eight hundred seventy-one thousand, four hundred ninety".