90922001 has 12 divisors (see below), whose sum is σ = 97136028. Its totient is φ = 85085952.

The previous prime is 90921979. The next prime is 90922019. The reversal of 90922001 is 10022909.

It can be written as a sum of positive squares in 6 ways, for example, as 17648401 + 73273600 = 4201^2 + 8560^2 .

It is a de Polignac number, because none of the positive numbers 2^k-90922001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90922031) 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 11 ways as a sum of consecutive naturals, for example, 56135 + ... + 57731.

It is an arithmetic number, because the mean of its divisors is an integer number (8094669).

Almost surely, 2^90922001 is an apocalyptic number.

It is an amenable number.

90922001 is a deficient number, since it is larger than the sum of its proper divisors (6214027).

90922001 is a wasteful number, since it uses less digits than its factorization.

90922001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 90922001 is about 9535.3028793007. The cubic root of 90922001 is about 449.6655968280.

The spelling of 90922001 in words is "ninety million, nine hundred twenty-two thousand, one".