399014437 has 2 divisors, whose sum is σ = 399014438. Its totient is φ = 399014436.

The previous prime is 399014417. The next prime is 399014461. The reversal of 399014437 is 734410993.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260693316 + 138321121 = 16146^2 + 11761^2 .

It is a cyclic number.

It is not a de Polignac number, because 399014437 - 2⁷ = 399014309 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 399014437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399014417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199507218 + 199507219.

It is an arithmetic number, because the mean of its divisors is an integer number (199507219).

Almost surely, 2^399014437 is an apocalyptic number.

It is an amenable number.

399014437 is a deficient number, since it is larger than the sum of its proper divisors (1).

399014437 is an equidigital number, since it uses as much as digits as its factorization.

399014437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 399014437 is about 19975.3457291733. The cubic root of 399014437 is about 736.2006611870.

The spelling of 399014437 in words is "three hundred ninety-nine million, fourteen thousand, four hundred thirty-seven".