399057413 has 2 divisors, whose sum is σ = 399057414. Its totient is φ = 399057412.

The previous prime is 399057403. The next prime is 399057431. The reversal of 399057413 is 314750993.

Together with next prime (399057431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310358689 + 88698724 = 17617^2 + 9418^2 .

It is an emirp because it is prime and its reverse (314750993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 399057413 - 2⁶ = 399057349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399057403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199528706 + 199528707.

It is an arithmetic number, because the mean of its divisors is an integer number (199528707).

Almost surely, 2^399057413 is an apocalyptic number.

It is an amenable number.

399057413 is a deficient number, since it is larger than the sum of its proper divisors (1).

399057413 is an equidigital number, since it uses as much as digits as its factorization.

399057413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 399057413 is about 19976.4214262715. The cubic root of 399057413 is about 736.2270911611.

The spelling of 399057413 in words is "three hundred ninety-nine million, fifty-seven thousand, four hundred thirteen".