39019930709 has 2 divisors, whose sum is σ = 39019930710. Its totient is φ = 39019930708.

The previous prime is 39019930699. The next prime is 39019930753. The reversal of 39019930709 is 90703991093.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36423722500 + 2596208209 = 190850^2 + 50953^2 .

It is a cyclic number.

It is not a de Polignac number, because 39019930709 - 2⁴ = 39019930693 is a prime.

It is a super-2 number, since 2×39019930709² (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 (39019930769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19509965354 + 19509965355.

It is an arithmetic number, because the mean of its divisors is an integer number (19509965355).

Almost surely, 2^39019930709 is an apocalyptic number.

It is an amenable number.

39019930709 is a deficient number, since it is larger than the sum of its proper divisors (1).

39019930709 is an equidigital number, since it uses as much as digits as its factorization.

39019930709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 413343, while the sum is 50.

The spelling of 39019930709 in words is "thirty-nine billion, nineteen million, nine hundred thirty thousand, seven hundred nine".