90260001 has 20 divisors (see below), whose sum is σ = 145206292. Its totient is φ = 55543968.

The previous prime is 90259999. The next prime is 90260011. The reversal of 90260001 is 10006209.

It can be written as a sum of positive squares in 2 ways, for example, as 15610401 + 74649600 = 3951^2 + 8640^2 .

It is not a de Polignac number, because 90260001 - 2¹ = 90259999 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 (90260011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41806 + ... + 43911.

Almost surely, 2^90260001 is an apocalyptic number.

It is an amenable number.

90260001 is a deficient number, since it is larger than the sum of its proper divisors (54946291).

90260001 is a wasteful number, since it uses less digits than its factorization.

90260001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85742 (or 85733 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 90260001 is about 9500.5263538396. The cubic root of 90260001 is about 448.5716040977.

The spelling of 90260001 in words is "ninety million, two hundred sixty thousand, one".