399380259 has 8 divisors (see below), whose sum is σ = 544891072. Its totient is φ = 260061480.

The previous prime is 399380249. The next prime is 399380273. The reversal of 399380259 is 952083993.

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

It is not a de Polignac number, because 399380259 - 2²⁵ = 365825827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399380249) 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, 1547857 + ... + 1548114.

It is an arithmetic number, because the mean of its divisors is an integer number (68111384).

Almost surely, 2^399380259 is an apocalyptic number.

399380259 is a deficient number, since it is larger than the sum of its proper divisors (145510813).

399380259 is a wasteful number, since it uses less digits than its factorization.

399380259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096017.

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 399380259 is about 19984.5004691136. The cubic root of 399380259 is about 736.4255788092.

The spelling of 399380259 in words is "three hundred ninety-nine million, three hundred eighty thousand, two hundred fifty-nine".