90999010 has 8 divisors (see below), whose sum is σ = 163798236. Its totient is φ = 36399600.

The previous prime is 90998989. The next prime is 90999023. The reversal of 90999010 is 1099909.

It can be written as a sum of positive squares in 2 ways, for example, as 76230361 + 14768649 = 8731^2 + 3843^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4549941 + ... + 4549960.

Almost surely, 2^90999010 is an apocalyptic number.

90999010 is a deficient number, since it is larger than the sum of its proper divisors (72799226).

90999010 is a wasteful number, since it uses less digits than its factorization.

90999010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9099908.

The product of its (nonzero) digits is 6561, while the sum is 37.

The square root of 90999010 is about 9539.3401239289. The cubic root of 90999010 is about 449.7925134000.

The spelling of 90999010 in words is "ninety million, nine hundred ninety-nine thousand, ten".