39928699399 has 2 divisors, whose sum is σ = 39928699400. Its totient is φ = 39928699398.

The previous prime is 39928699339. The next prime is 39928699427. The reversal of 39928699399 is 99399682993.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39928699399 is a prime.

It is a super-2 number, since 2×39928699399² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39928699339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19964349699 + 19964349700.

It is an arithmetic number, because the mean of its divisors is an integer number (19964349700).

Almost surely, 2^39928699399 is an apocalyptic number.

39928699399 is a deficient number, since it is larger than the sum of its proper divisors (1).

39928699399 is an equidigital number, since it uses as much as digits as its factorization.

39928699399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459165024, while the sum is 76.

The spelling of 39928699399 in words is "thirty-nine billion, nine hundred twenty-eight million, six hundred ninety-nine thousand, three hundred ninety-nine".