90634009 has 8 divisors (see below), whose sum is σ = 95522240. Its totient is φ = 85757616.

The previous prime is 90634003. The next prime is 90634039. The reversal of 90634009 is 90043609.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90634009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90634003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15907 + ... + 20839.

It is an arithmetic number, because the mean of its divisors is an integer number (11940280).

Almost surely, 2^90634009 is an apocalyptic number.

It is an amenable number.

90634009 is a deficient number, since it is larger than the sum of its proper divisors (4888231).

90634009 is a wasteful number, since it uses less digits than its factorization.

90634009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 90634009 is about 9520.1895464324. The cubic root of 90634009 is about 449.1903284179.

The spelling of 90634009 in words is "ninety million, six hundred thirty-four thousand, nine".