199440392 has 12 divisors (see below), whose sum is σ = 374025645. Its totient is φ = 99700224.

The previous prime is 199440361. The next prime is 199440421. The reversal of 199440392 is 293044991.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 194714116 + 4726276 = 13954^2 + 2174^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9986.

It is a super-2 number, since 2×199440392² = 79552939922227328, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 37448 + ... + 42440.

Almost surely, 2^199440392 is an apocalyptic number.

It is an amenable number.

199440392 is a deficient number, since it is larger than the sum of its proper divisors (174585253).

199440392 is an frugal number, since it uses more digits than its factorization.

199440392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9992 (or 4995 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 199440392 is about 14122.3366338577. The cubic root of 199440392 is about 584.2576035616.

The spelling of 199440392 in words is "one hundred ninety-nine million, four hundred forty thousand, three hundred ninety-two".