399162849 has 16 divisors (see below), whose sum is σ = 560916480. Its totient is φ = 251793360.

The previous prime is 399162847. The next prime is 399162871. The reversal of 399162849 is 948261993.

It is not a de Polignac number, because 399162849 - 2¹ = 399162847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399162847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48084 + ... + 55770.

It is an arithmetic number, because the mean of its divisors is an integer number (35057280).

Almost surely, 2^399162849 is an apocalyptic number.

It is an amenable number.

399162849 is a deficient number, since it is larger than the sum of its proper divisors (161753631).

399162849 is a wasteful number, since it uses less digits than its factorization.

399162849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620.

The product of its digits is 839808, while the sum is 51.

The square root of 399162849 is about 19979.0602631856. The cubic root of 399162849 is about 736.2919256115.

The spelling of 399162849 in words is "three hundred ninety-nine million, one hundred sixty-two thousand, eight hundred forty-nine".