90265009 has 4 divisors (see below), whose sum is σ = 90300016. Its totient is φ = 90230004.

The previous prime is 90265001. The next prime is 90265027. The reversal of 90265009 is 90056209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90265009 - 2³ = 90265001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90265001) 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 3 ways as a sum of consecutive naturals, for example, 13299 + ... + 18904.

It is an arithmetic number, because the mean of its divisors is an integer number (22575004).

Almost surely, 2^90265009 is an apocalyptic number.

It is an amenable number.

90265009 is a deficient number, since it is larger than the sum of its proper divisors (35007).

90265009 is a wasteful number, since it uses less digits than its factorization.

90265009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35006.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 90265009 is about 9500.7899145282. The cubic root of 90265009 is about 448.5799001499.

The spelling of 90265009 in words is "ninety million, two hundred sixty-five thousand, nine".