399295342 has 8 divisors (see below), whose sum is σ = 615130776. Its totient is φ = 194251752.

The previous prime is 399295313. The next prime is 399295363. The reversal of 399295342 is 243592993.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×399295342³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 399295292 and 399295301.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2697868 + ... + 2698015.

It is an arithmetic number, because the mean of its divisors is an integer number (76891347).

Almost surely, 2^399295342 is an apocalyptic number.

399295342 is a deficient number, since it is larger than the sum of its proper divisors (215835434).

399295342 is a wasteful number, since it uses less digits than its factorization.

399295342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395922.

The product of its digits is 524880, while the sum is 46.

The square root of 399295342 is about 19982.3757846759. The cubic root of 399295342 is about 736.3733817012.

The spelling of 399295342 in words is "three hundred ninety-nine million, two hundred ninety-five thousand, three hundred forty-two".