399214699 has 4 divisors (see below), whose sum is σ = 429923536. Its totient is φ = 368505864.

The previous prime is 399214693. The next prime is 399214727. The reversal of 399214699 is 996412993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996412993 = 17 ⋅58612529.

It is a cyclic number.

It is not a de Polignac number, because 399214699 - 2³ = 399214691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399214691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15354399 + ... + 15354424.

It is an arithmetic number, because the mean of its divisors is an integer number (107480884).

Almost surely, 2^399214699 is an apocalyptic number.

399214699 is a deficient number, since it is larger than the sum of its proper divisors (30708837).

399214699 is a wasteful number, since it uses less digits than its factorization.

399214699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30708836.

The product of its digits is 944784, while the sum is 52.

The square root of 399214699 is about 19980.3578296286. The cubic root of 399214699 is about 736.3238049005.

The spelling of 399214699 in words is "three hundred ninety-nine million, two hundred fourteen thousand, six hundred ninety-nine".