90047075 has 6 divisors (see below), whose sum is σ = 111658404. Its totient is φ = 72037640.

The previous prime is 90047063. The next prime is 90047077. The reversal of 90047075 is 57074009.

It is a de Polignac number, because none of the positive numbers 2^k-90047075 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90047077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1800917 + ... + 1800966.

It is an arithmetic number, because the mean of its divisors is an integer number (18609734).

Almost surely, 2^90047075 is an apocalyptic number.

90047075 is a deficient number, since it is larger than the sum of its proper divisors (21611329).

90047075 is a wasteful number, since it uses less digits than its factorization.

90047075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601893 (or 3601888 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 90047075 is about 9489.3137265031. The cubic root of 90047075 is about 448.2185951585.

The spelling of 90047075 in words is "ninety million, forty-seven thousand, seventy-five".