399476883437 has 2 divisors, whose sum is σ = 399476883438. Its totient is φ = 399476883436.

The previous prime is 399476883401. The next prime is 399476883541. The reversal of 399476883437 is 734388674993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322318488361 + 77158395076 = 567731^2 + 277774^2 .

It is a cyclic number.

It is not a de Polignac number, because 399476883437 - 2¹² = 399476879341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399476883737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199738441718 + 199738441719.

It is an arithmetic number, because the mean of its divisors is an integer number (199738441719).

Almost surely, 2^399476883437 is an apocalyptic number.

It is an amenable number.

399476883437 is a deficient number, since it is larger than the sum of its proper divisors (1).

399476883437 is an equidigital number, since it uses as much as digits as its factorization.

399476883437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 658409472, while the sum is 71.

The spelling of 399476883437 in words is "three hundred ninety-nine billion, four hundred seventy-six million, eight hundred eighty-three thousand, four hundred thirty-seven".