190200989 has 24 divisors (see below), whose sum is σ = 216012216. Its totient is φ = 167270400.

The previous prime is 190200971. The next prime is 190201013. The reversal of 190200989 is 989002091.

It can be written as a sum of positive squares in 4 ways, for example, as 1138489 + 189062500 = 1067^2 + 13750^2 .

It is not a de Polignac number, because 190200989 - 2⁸ = 190200733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190200919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 538637 + ... + 538989.

It is an arithmetic number, because the mean of its divisors is an integer number (9000509).

Almost surely, 2^190200989 is an apocalyptic number.

It is an amenable number.

190200989 is a deficient number, since it is larger than the sum of its proper divisors (25811227).

190200989 is a wasteful number, since it uses less digits than its factorization.

190200989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 190200989 is about 13791.3374623348. The cubic root of 190200989 is about 575.0923496284.

The spelling of 190200989 in words is "one hundred ninety million, two hundred thousand, nine hundred eighty-nine".