399214249 has 8 divisors (see below), whose sum is σ = 470962688. Its totient is φ = 331145280.

The previous prime is 399214241. The next prime is 399214271. The reversal of 399214249 is 942412993.

It is a happy number.

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 399214249 - 2³ = 399214241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399214241) 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, 919632 + ... + 920065.

It is an arithmetic number, because the mean of its divisors is an integer number (58870336).

Almost surely, 2^399214249 is an apocalyptic number.

It is an amenable number.

399214249 is a deficient number, since it is larger than the sum of its proper divisors (71748439).

399214249 is a wasteful number, since it uses less digits than its factorization.

399214249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839735.

The product of its digits is 139968, while the sum is 43.

The square root of 399214249 is about 19980.3465685658. The cubic root of 399214249 is about 736.3235282358.

The spelling of 399214249 in words is "three hundred ninety-nine million, two hundred fourteen thousand, two hundred forty-nine".