397205699 has 8 divisors (see below), whose sum is σ = 452155392. Its totient is φ = 345396040.

The previous prime is 397205689. The next prime is 397205707. The reversal of 397205699 is 996502793.

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

It is a de Polignac number, because none of the positive numbers 2^k-397205699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397205609) 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, 784739 + ... + 785244.

It is an arithmetic number, because the mean of its divisors is an integer number (56519424).

Almost surely, 2^397205699 is an apocalyptic number.

397205699 is a deficient number, since it is larger than the sum of its proper divisors (54949693).

397205699 is a wasteful number, since it uses less digits than its factorization.

397205699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570017.

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 397205699 is about 19930.0200451480. The cubic root of 397205699 is about 735.0865734789.

The spelling of 397205699 in words is "three hundred ninety-seven million, two hundred five thousand, six hundred ninety-nine".