39040050221 has 4 divisors (see below), whose sum is σ = 39040563744. Its totient is φ = 39039536700.

The previous prime is 39040050211. The next prime is 39040050271. The reversal of 39040050221 is 12205004093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39040050221 - 2⁶ = 39040050157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39040050211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117575 + ... + 303156.

It is an arithmetic number, because the mean of its divisors is an integer number (9760140936).

Almost surely, 2^39040050221 is an apocalyptic number.

It is an amenable number.

39040050221 is a deficient number, since it is larger than the sum of its proper divisors (513523).

39040050221 is an equidigital number, since it uses as much as digits as its factorization.

39040050221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513522.

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 39040050221 in words is "thirty-nine billion, forty million, fifty thousand, two hundred twenty-one".