399162850 has 12 divisors (see below), whose sum is σ = 742442994. Its totient is φ = 159665120.

The previous prime is 399162847. The next prime is 399162871. The reversal of 399162850 is 58261993.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 387184329 + 11978521 = 19677^2 + 3461^2 .

It is a junction number, because it is equal to n+sod(n) for n = 399162797 and 399162806.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3991579 + ... + 3991678.

Almost surely, 2^399162850 is an apocalyptic number.

399162850 is a deficient number, since it is larger than the sum of its proper divisors (343280144).

399162850 is a wasteful number, since it uses less digits than its factorization.

399162850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7983269 (or 7983264 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 399162850 is about 19979.0602882118. The cubic root of 399162850 is about 736.2919262264.

The spelling of 399162850 in words is "three hundred ninety-nine million, one hundred sixty-two thousand, eight hundred fifty".