399570041 has 8 divisors (see below), whose sum is σ = 430525704. Its totient is φ = 368645760.

The previous prime is 399570013. The next prime is 399570079. The reversal of 399570041 is 140075993.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 409600 + 399160441 = 640^2 + 19979^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399570041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399569977 and 399570004.

It is not an unprimeable number, because it can be changed into a prime (399570011) 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 7 ways as a sum of consecutive naturals, for example, 23171 + ... + 36551.

It is an arithmetic number, because the mean of its divisors is an integer number (53815713).

Almost surely, 2^399570041 is an apocalyptic number.

It is an amenable number.

399570041 is a deficient number, since it is larger than the sum of its proper divisors (30955663).

399570041 is a wasteful number, since it uses less digits than its factorization.

399570041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15691.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 399570041 is about 19989.2481349349. The cubic root of 399570041 is about 736.5422079984.

The spelling of 399570041 in words is "three hundred ninety-nine million, five hundred seventy thousand, forty-one".