90249601 has 16 divisors (see below), whose sum is σ = 102896640. Its totient is φ = 78468480.

The previous prime is 90249557. The next prime is 90249637. The reversal of 90249601 is 10694209.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-90249601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90249641) 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, 46221 + ... + 48133.

It is an arithmetic number, because the mean of its divisors is an integer number (6431040).

Almost surely, 2^90249601 is an apocalyptic number.

It is an amenable number.

90249601 is a deficient number, since it is larger than the sum of its proper divisors (12647039).

90249601 is a wasteful number, since it uses less digits than its factorization.

90249601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 90249601 is about 9499.9789999768. The cubic root of 90249601 is about 448.5543748938.

The spelling of 90249601 in words is "ninety million, two hundred forty-nine thousand, six hundred one".