40045419839 has 2 divisors, whose sum is σ = 40045419840. Its totient is φ = 40045419838.

The previous prime is 40045419803. The next prime is 40045419859. The reversal of 40045419839 is 93891454004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40045419839 - 2¹² = 40045415743 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 40045419793 and 40045419802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40045419859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022709919 + 20022709920.

It is an arithmetic number, because the mean of its divisors is an integer number (20022709920).

Almost surely, 2^40045419839 is an apocalyptic number.

40045419839 is a deficient number, since it is larger than the sum of its proper divisors (1).

40045419839 is an equidigital number, since it uses as much as digits as its factorization.

40045419839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 40045419839 in words is "forty billion, forty-five million, four hundred nineteen thousand, eight hundred thirty-nine".