399367950 has 24 divisors (see below), whose sum is σ = 990432888. Its totient is φ = 106498080.

The previous prime is 399367949. The next prime is 399367951. The reversal of 399367950 is 59763993.

It is an interprime number because it is at equal distance from previous prime (399367949) and next prime (399367951).

It is a junction number, because it is equal to n+sod(n) for n = 399367893 and 399367902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399367951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1331077 + ... + 1331376.

It is an arithmetic number, because the mean of its divisors is an integer number (41268037).

Almost surely, 2^399367950 is an apocalyptic number.

399367950 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399367950 is an abundant number, since it is smaller than the sum of its proper divisors (591064938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399367950 is a wasteful number, since it uses less digits than its factorization.

399367950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662468 (or 2662463 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 51.

The square root of 399367950 is about 19984.1925030760. The cubic root of 399367950 is about 736.4180131243.

The spelling of 399367950 in words is "three hundred ninety-nine million, three hundred sixty-seven thousand, nine hundred fifty".