399699341 has 8 divisors (see below), whose sum is σ = 407899800. Its totient is φ = 391523392.

The previous prime is 399699331. The next prime is 399699347. The reversal of 399699341 is 143996993.

It can be written as a sum of positive squares in 4 ways, for example, as 152423716 + 247275625 = 12346^2 + 15725^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 399699341 - 2¹⁰ = 399698317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399699347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28835 + ... + 40383.

It is an arithmetic number, because the mean of its divisors is an integer number (50987475).

Almost surely, 2^399699341 is an apocalyptic number.

It is an amenable number.

399699341 is a deficient number, since it is larger than the sum of its proper divisors (8200459).

399699341 is a wasteful number, since it uses less digits than its factorization.

399699341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12255.

The product of its digits is 1417176, while the sum is 53.

The square root of 399699341 is about 19992.4821120340. The cubic root of 399699341 is about 736.6216472514.

The spelling of 399699341 in words is "three hundred ninety-nine million, six hundred ninety-nine thousand, three hundred forty-one".