397099689 has 8 divisors (see below), whose sum is σ = 605104320. Its totient is φ = 226914096.

The previous prime is 397099643. The next prime is 397099699. The reversal of 397099689 is 986990793.

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

It is not a de Polignac number, because 397099689 - 2¹¹ = 397097641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397099609) 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, 9454734 + ... + 9454775.

It is an arithmetic number, because the mean of its divisors is an integer number (75638040).

Almost surely, 2^397099689 is an apocalyptic number.

It is an amenable number.

397099689 is a deficient number, since it is larger than the sum of its proper divisors (208004631).

397099689 is a wasteful number, since it uses less digits than its factorization.

397099689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18909519.

The product of its (nonzero) digits is 6613488, while the sum is 60.

The square root of 397099689 is about 19927.3603118928. The cubic root of 397099689 is about 735.0211720497.

The spelling of 397099689 in words is "three hundred ninety-seven million, ninety-nine thousand, six hundred eighty-nine".