90609970 has 16 divisors (see below), whose sum is σ = 177925248. Its totient is φ = 32949040.

The previous prime is 90609947. The next prime is 90609973. The reversal of 90609970 is 7990609.

It is not an unprimeable number, because it can be changed into a prime (90609973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411754 + ... + 411973.

It is an arithmetic number, because the mean of its divisors is an integer number (11120328).

Almost surely, 2^90609970 is an apocalyptic number.

90609970 is a deficient number, since it is larger than the sum of its proper divisors (87315278).

90609970 is a wasteful number, since it uses less digits than its factorization.

90609970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823745.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 90609970 is about 9518.9269353221. The cubic root of 90609970 is about 449.1506117552.

The spelling of 90609970 in words is "ninety million, six hundred nine thousand, nine hundred seventy".