399769341 has 4 divisors (see below), whose sum is σ = 533025792. Its totient is φ = 266512892.

The previous prime is 399769339. The next prime is 399769343. The reversal of 399769341 is 143967993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (399769339) and next prime (399769343).

It is a cyclic number.

It is not a de Polignac number, because 399769341 - 2¹ = 399769339 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399769343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66628221 + ... + 66628226.

It is an arithmetic number, because the mean of its divisors is an integer number (133256448).

Almost surely, 2^399769341 is an apocalyptic number.

It is an amenable number.

399769341 is a deficient number, since it is larger than the sum of its proper divisors (133256451).

399769341 is a wasteful number, since it uses less digits than its factorization.

399769341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133256450.

The product of its digits is 1102248, while the sum is 51.

The square root of 399769341 is about 19994.2326934544. The cubic root of 399769341 is about 736.6646466597.

The spelling of 399769341 in words is "three hundred ninety-nine million, seven hundred sixty-nine thousand, three hundred forty-one".