199474965 has 24 divisors (see below), whose sum is σ = 346116888. Its totient is φ = 106275840.

The previous prime is 199474943. The next prime is 199474973. The reversal of 199474965 is 569474991.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22212369 + 177262596 = 4713^2 + 13314^2 .

It is a de Polignac number, because none of the positive numbers 2^k-199474965 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59617 + ... + 62873.

It is an arithmetic number, because the mean of its divisors is an integer number (14421537).

Almost surely, 2^199474965 is an apocalyptic number.

199474965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199474965 is a deficient number, since it is larger than the sum of its proper divisors (146641923).

199474965 is a wasteful number, since it uses less digits than its factorization.

199474965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629 (or 4626 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 199474965 is about 14123.5606346275. The cubic root of 199474965 is about 584.2913619707.

The spelling of 199474965 in words is "one hundred ninety-nine million, four hundred seventy-four thousand, nine hundred sixty-five".