90977909 has 16 divisors (see below), whose sum is σ = 105960960. Its totient is φ = 77238000.

The previous prime is 90977851. The next prime is 90977911.

90977909 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90977909 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 (90977969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11774 + ... + 17904.

It is an arithmetic number, because the mean of its divisors is an integer number (6622560).

Almost surely, 2^90977909 is an apocalyptic number.

It is an amenable number.

90977909 is a deficient number, since it is larger than the sum of its proper divisors (14983051).

90977909 is a wasteful number, since it uses less digits than its factorization.

90977909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6232.

The product of its (nonzero) digits is 321489, while the sum is 50.

The square root of 90977909 is about 9538.2340608731. The cubic root of 90977909 is about 449.7577445034.

The spelling of 90977909 in words is "ninety million, nine hundred seventy-seven thousand, nine hundred nine".