399146125 has 16 divisors (see below), whose sum is σ = 569297664. Its totient is φ = 273699600.

The previous prime is 399146123. The next prime is 399146191. The reversal of 399146125 is 521641993.

It is not a de Polignac number, because 399146125 - 2¹ = 399146123 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 (399146123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227209 + ... + 228958.

It is an arithmetic number, because the mean of its divisors is an integer number (35581104).

Almost surely, 2^399146125 is an apocalyptic number.

399146125 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

399146125 is a deficient number, since it is larger than the sum of its proper divisors (170151539).

399146125 is an equidigital number, since it uses as much as digits as its factorization.

399146125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456189 (or 456179 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 399146125 is about 19978.6417205975. The cubic root of 399146125 is about 736.2816424917.

The spelling of 399146125 in words is "three hundred ninety-nine million, one hundred forty-six thousand, one hundred twenty-five".