99190257 has 16 divisors (see below), whose sum is σ = 143016192. Its totient is φ = 60911360.

The previous prime is 99190249. The next prime is 99190277. The reversal of 99190257 is 75209199.

It is a cyclic number.

It is not a de Polignac number, because 99190257 - 2³ = 99190249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99190277) 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, 18294 + ... + 23087.

It is an arithmetic number, because the mean of its divisors is an integer number (8938512).

Almost surely, 2^99190257 is an apocalyptic number.

It is an amenable number.

99190257 is a deficient number, since it is larger than the sum of its proper divisors (43825935).

99190257 is a wasteful number, since it uses less digits than its factorization.

99190257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41448.

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

The square root of 99190257 is about 9959.4305560107. The cubic root of 99190257 is about 462.9026551394.

The spelling of 99190257 in words is "ninety-nine million, one hundred ninety thousand, two hundred fifty-seven".