399641050759 has 4 divisors (see below), whose sum is σ = 399811330504. Its totient is φ = 399470771016.

The previous prime is 399641050687. The next prime is 399641050811. The reversal of 399641050759 is 957050146993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 957050146993 = 37 ⋅25866220189.

It is a cyclic number.

It is not a de Polignac number, because 399641050759 - 2²⁹ = 399104179847 is a prime.

It is a super-2 number, since 2×399641050759² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399641020759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85136352 + ... + 85141045.

It is an arithmetic number, because the mean of its divisors is an integer number (99952832626).

Almost surely, 2^399641050759 is an apocalyptic number.

399641050759 is a deficient number, since it is larger than the sum of its proper divisors (170279745).

399641050759 is a wasteful number, since it uses less digits than its factorization.

399641050759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170279744.

The product of its (nonzero) digits is 9185400, while the sum is 58.

The spelling of 399641050759 in words is "three hundred ninety-nine billion, six hundred forty-one million, fifty thousand, seven hundred fifty-nine".