90497170 has 8 divisors (see below), whose sum is σ = 162894924. Its totient is φ = 36198864.

The previous prime is 90497161. The next prime is 90497189. The reversal of 90497170 is 7179409.

It is a Cunningham number, because it is equal to 9513²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 90497169 + 1 = 9513^2 + 1^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524849 + ... + 4524868.

Almost surely, 2^90497170 is an apocalyptic number.

90497170 is a deficient number, since it is larger than the sum of its proper divisors (72397754).

90497170 is a wasteful number, since it uses less digits than its factorization.

90497170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9049724.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 90497170 is about 9513.0000525597. Note that the first 4 decimals coincide. The cubic root of 90497170 is about 448.9641524084.

The spelling of 90497170 in words is "ninety million, four hundred ninety-seven thousand, one hundred seventy".