90199219 has 8 divisors (see below), whose sum is σ = 99868608. Its totient is φ = 80774760.

The previous prime is 90199211. The next prime is 90199223. The reversal of 90199219 is 91299109.

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

It is not a de Polignac number, because 90199219 - 2³ = 90199211 is a prime.

It is a super-2 number, since 2×90199219² = 16271798216419922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90199211) 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, 60457 + ... + 61930.

It is an arithmetic number, because the mean of its divisors is an integer number (12483576).

Almost surely, 2^90199219 is an apocalyptic number.

90199219 is a deficient number, since it is larger than the sum of its proper divisors (9669389).

90199219 is a wasteful number, since it uses less digits than its factorization.

90199219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122465.

The product of its (nonzero) digits is 13122, while the sum is 40.

The square root of 90199219 is about 9497.3269397236. The cubic root of 90199219 is about 448.4708905981.

The spelling of 90199219 in words is "ninety million, one hundred ninety-nine thousand, two hundred nineteen".