39461979919 has 2 divisors, whose sum is σ = 39461979920. Its totient is φ = 39461979918.

The previous prime is 39461979853. The next prime is 39461980013. The reversal of 39461979919 is 91997916493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39461979919 - 2⁹ = 39461979407 is a prime.

It is a super-2 number, since 2×39461979919² (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 (39461979619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19730989959 + 19730989960.

It is an arithmetic number, because the mean of its divisors is an integer number (19730989960).

Almost surely, 2^39461979919 is an apocalyptic number.

39461979919 is a deficient number, since it is larger than the sum of its proper divisors (1).

39461979919 is an equidigital number, since it uses as much as digits as its factorization.

39461979919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29760696, while the sum is 67.

The spelling of 39461979919 in words is "thirty-nine billion, four hundred sixty-one million, nine hundred seventy-nine thousand, nine hundred nineteen".