199007497 has 8 divisors (see below), whose sum is σ = 220108616. Its totient is φ = 178733952.

The previous prime is 199007489. The next prime is 199007503. The reversal of 199007497 is 794700991.

It can be written as a sum of positive squares in 4 ways, for example, as 26584336 + 172423161 = 5156^2 + 13131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199007497 - 2³ = 199007489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199007467) 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, 206388 + ... + 207349.

It is an arithmetic number, because the mean of its divisors is an integer number (27513577).

Almost surely, 2^199007497 is an apocalyptic number.

It is an amenable number.

199007497 is a deficient number, since it is larger than the sum of its proper divisors (21101119).

199007497 is a wasteful number, since it uses less digits than its factorization.

199007497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413787.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 199007497 is about 14107.0017012829. The cubic root of 199007497 is about 583.8345775687.

The spelling of 199007497 in words is "one hundred ninety-nine million, seven thousand, four hundred ninety-seven".