199772464 has 10 divisors (see below), whose sum is σ = 387059180. Its totient is φ = 99886224.

The previous prime is 199772437. The next prime is 199772471. The reversal of 199772464 is 464277991.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6242874 + ... + 6242905.

It is an arithmetic number, because the mean of its divisors is an integer number (38705918).

Almost surely, 2^199772464 is an apocalyptic number.

It is an amenable number.

199772464 is a deficient number, since it is larger than the sum of its proper divisors (187286716).

199772464 is a wasteful number, since it uses less digits than its factorization.

199772464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12485787 (or 12485781 counting only the distinct ones).

The product of its digits is 762048, while the sum is 49.

The square root of 199772464 is about 14134.0887219516. The cubic root of 199772464 is about 584.5816903871.

The spelling of 199772464 in words is "one hundred ninety-nine million, seven hundred seventy-two thousand, four hundred sixty-four".