199312947 has 32 divisors (see below), whose sum is σ = 319334400. Its totient is φ = 122385024.

The previous prime is 199312937. The next prime is 199312973. The reversal of 199312947 is 749213991.

199312947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 199312947 - 2⁷ = 199312819 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (199312937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16954 + ... + 26192.

It is an arithmetic number, because the mean of its divisors is an integer number (9979200).

Almost surely, 2^199312947 is an apocalyptic number.

199312947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

199312947 is a deficient number, since it is larger than the sum of its proper divisors (120021453).

199312947 is a wasteful number, since it uses less digits than its factorization.

199312947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9312 (or 9306 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 199312947 is about 14117.8237345563. The cubic root of 199312947 is about 584.1331276457.

The spelling of 199312947 in words is "one hundred ninety-nine million, three hundred twelve thousand, nine hundred forty-seven".