39931228807 has 2 divisors, whose sum is σ = 39931228808. Its totient is φ = 39931228806.

The previous prime is 39931228747. The next prime is 39931228829. The reversal of 39931228807 is 70882213993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39931228807 - 2⁷ = 39931228679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39931228907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19965614403 + 19965614404.

It is an arithmetic number, because the mean of its divisors is an integer number (19965614404).

Almost surely, 2^39931228807 is an apocalyptic number.

39931228807 is a deficient number, since it is larger than the sum of its proper divisors (1).

39931228807 is an equidigital number, since it uses as much as digits as its factorization.

39931228807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 39931228807 in words is "thirty-nine billion, nine hundred thirty-one million, two hundred twenty-eight thousand, eight hundred seven".