199261974 has 16 divisors (see below), whose sum is σ = 399676608. Its totient is φ = 66228552.

The previous prime is 199261973. The next prime is 199262023. The reversal of 199261974 is 479162991.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199261973) 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, 45772 + ... + 49935.

It is an arithmetic number, because the mean of its divisors is an integer number (24979788).

Almost surely, 2^199261974 is an apocalyptic number.

199261974 is an abundant number, since it is smaller than the sum of its proper divisors (200414634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199261974 is a wasteful number, since it uses less digits than its factorization.

199261974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96059.

The product of its digits is 244944, while the sum is 48.

The square root of 199261974 is about 14116.0183479620. The cubic root of 199261974 is about 584.0833273075.

The spelling of 199261974 in words is "one hundred ninety-nine million, two hundred sixty-one thousand, nine hundred seventy-four".