90032207 has 4 divisors (see below), whose sum is σ = 90636600. Its totient is φ = 89427816.

The previous prime is 90032179. The next prime is 90032209. The reversal of 90032207 is 70223009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90032207 - 2¹⁴ = 90015823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90032209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301973 + ... + 302270.

It is an arithmetic number, because the mean of its divisors is an integer number (22659150).

Almost surely, 2^90032207 is an apocalyptic number.

90032207 is a deficient number, since it is larger than the sum of its proper divisors (604393).

90032207 is a wasteful number, since it uses less digits than its factorization.

90032207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604392.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 90032207 is about 9488.5302866145. The cubic root of 90032207 is about 448.1939247999.

The spelling of 90032207 in words is "ninety million, thirty-two thousand, two hundred seven".