90257199 has 8 divisors (see below), whose sum is σ = 127422000. Its totient is φ = 56631936.

The previous prime is 90257179. The next prime is 90257203. The reversal of 90257199 is 99175209.

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

It is not a de Polignac number, because 90257199 - 2¹² = 90253103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90257199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90257119) 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, 884824 + ... + 884925.

It is an arithmetic number, because the mean of its divisors is an integer number (15927750).

Almost surely, 2^90257199 is an apocalyptic number.

90257199 is a deficient number, since it is larger than the sum of its proper divisors (37164801).

90257199 is a wasteful number, since it uses less digits than its factorization.

90257199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769769.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 90257199 is about 9500.3788871813. The cubic root of 90257199 is about 448.5669622828.

The spelling of 90257199 in words is "ninety million, two hundred fifty-seven thousand, one hundred ninety-nine".