90250799 has 8 divisors (see below), whose sum is σ = 92602608. Its totient is φ = 87906240.

The previous prime is 90250789. The next prime is 90250829. The reversal of 90250799 is 99705209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90250799 - 2⁸ = 90250543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90250729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30869 + ... + 33665.

It is an arithmetic number, because the mean of its divisors is an integer number (11575326).

Almost surely, 2^90250799 is an apocalyptic number.

90250799 is a deficient number, since it is larger than the sum of its proper divisors (2351809).

90250799 is a wasteful number, since it uses less digits than its factorization.

90250799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 90250799 is about 9500.0420525385. The cubic root of 90250799 is about 448.5563596330.

The spelling of 90250799 in words is "ninety million, two hundred fifty thousand, seven hundred ninety-nine".