399078150 has 24 divisors (see below), whose sum is σ = 989714184. Its totient is φ = 106420800.

The previous prime is 399078139. The next prime is 399078151. The reversal of 399078150 is 51870993.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399078151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1330111 + ... + 1330410.

It is an arithmetic number, because the mean of its divisors is an integer number (41238091).

Almost surely, 2^399078150 is an apocalyptic number.

399078150 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399078150 is an abundant number, since it is smaller than the sum of its proper divisors (590636034).

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

399078150 is a wasteful number, since it uses less digits than its factorization.

399078150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660536 (or 2660531 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 399078150 is about 19976.9404564363. The cubic root of 399078150 is about 736.2398436091.

The spelling of 399078150 in words is "three hundred ninety-nine million, seventy-eight thousand, one hundred fifty".