399225041 has 2 divisors, whose sum is σ = 399225042. Its totient is φ = 399225040.

The previous prime is 399225011. The next prime is 399225109. The reversal of 399225041 is 140522993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319658641 + 79566400 = 17879^2 + 8920^2 .

It is a cyclic number.

It is not a de Polignac number, because 399225041 - 2²⁶ = 332116177 is a prime.

It is a super-2 number, since 2×399225041² = 318761266722903362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 399224992 and 399225010.

It is not a weakly prime, because it can be changed into another prime (399225011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199612520 + 199612521.

It is an arithmetic number, because the mean of its divisors is an integer number (199612521).

Almost surely, 2^399225041 is an apocalyptic number.

It is an amenable number.

399225041 is a deficient number, since it is larger than the sum of its proper divisors (1).

399225041 is an equidigital number, since it uses as much as digits as its factorization.

399225041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 399225041 is about 19980.6166321262. The cubic root of 399225041 is about 736.3301632126.

The spelling of 399225041 in words is "three hundred ninety-nine million, two hundred twenty-five thousand, forty-one".