399150223 has 4 divisors (see below), whose sum is σ = 399193200. Its totient is φ = 399107248.

The previous prime is 399150173. The next prime is 399150251. The reversal of 399150223 is 322051993.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 322051993 = 4583 ⋅70271.

It is a cyclic number.

It is not a de Polignac number, because 399150223 - 2⁹ = 399149711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399150263) 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, 1123 + ... + 28276.

It is an arithmetic number, because the mean of its divisors is an integer number (99798300).

Almost surely, 2^399150223 is an apocalyptic number.

399150223 is a deficient number, since it is larger than the sum of its proper divisors (42977).

399150223 is a wasteful number, since it uses less digits than its factorization.

399150223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42976.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 399150223 is about 19978.7442798590. The cubic root of 399150223 is about 736.2841622639.

The spelling of 399150223 in words is "three hundred ninety-nine million, one hundred fifty thousand, two hundred twenty-three".