90404707 has 4 divisors (see below), whose sum is σ = 91011600. Its totient is φ = 89797816.

The previous prime is 90404701. The next prime is 90404737. The reversal of 90404707 is 70740409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70740409 = 67 ⋅1055827.

It is a cyclic number.

It is not a de Polignac number, because 90404707 - 2¹¹ = 90402659 is a prime.

It is a super-2 number, since 2×90404707² = 16346022095511698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90404701) 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, 303223 + ... + 303520.

It is an arithmetic number, because the mean of its divisors is an integer number (22752900).

Almost surely, 2^90404707 is an apocalyptic number.

90404707 is a deficient number, since it is larger than the sum of its proper divisors (606893).

90404707 is a wasteful number, since it uses less digits than its factorization.

90404707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606892.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 90404707 is about 9508.1389872046. The cubic root of 90404707 is about 448.8111947025.

The spelling of 90404707 in words is "ninety million, four hundred four thousand, seven hundred seven".