39854220019 has 2 divisors, whose sum is σ = 39854220020. Its totient is φ = 39854220018.

The previous prime is 39854219989. The next prime is 39854220023. The reversal of 39854220019 is 91002245893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39854220019 - 2²¹ = 39852122867 is a prime.

It is a super-2 number, since 2×39854220019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39854220059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19927110009 + 19927110010.

It is an arithmetic number, because the mean of its divisors is an integer number (19927110010).

Almost surely, 2^39854220019 is an apocalyptic number.

39854220019 is a deficient number, since it is larger than the sum of its proper divisors (1).

39854220019 is an equidigital number, since it uses as much as digits as its factorization.

39854220019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 39854220019 in words is "thirty-nine billion, eight hundred fifty-four million, two hundred twenty thousand, nineteen".