199040972 has 48 divisors (see below), whose sum is σ = 384072192. Its totient is φ = 89701440.

The previous prime is 199040953. The next prime is 199040977. The reversal of 199040972 is 279040991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (199040977) 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, 461597 + ... + 462027.

It is an arithmetic number, because the mean of its divisors is an integer number (8001504).

Almost surely, 2^199040972 is an apocalyptic number.

It is an amenable number.

199040972 is a deficient number, since it is larger than the sum of its proper divisors (185031220).

199040972 is a wasteful number, since it uses less digits than its factorization.

199040972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 199040972 is about 14108.1881189613. The cubic root of 199040972 is about 583.8673112882.

The spelling of 199040972 in words is "one hundred ninety-nine million, forty thousand, nine hundred seventy-two".