398697307 has 8 divisors (see below), whose sum is σ = 413411040. Its totient is φ = 384048000.

The previous prime is 398697289. The next prime is 398697317. The reversal of 398697307 is 703796893.

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 398697307 - 2⁷ = 398697179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398697317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3319 + ... + 28432.

It is an arithmetic number, because the mean of its divisors is an integer number (51676380).

Almost surely, 2^398697307 is an apocalyptic number.

398697307 is a deficient number, since it is larger than the sum of its proper divisors (14713733).

398697307 is a wasteful number, since it uses less digits than its factorization.

398697307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32213.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 398697307 is about 19967.4061159681. The cubic root of 398697307 is about 736.0055695024.

The spelling of 398697307 in words is "three hundred ninety-eight million, six hundred ninety-seven thousand, three hundred seven".