939990022001 has 4 divisors (see below), whose sum is σ = 949296854004. Its totient is φ = 930683190000.

The previous prime is 939990021959. The next prime is 939990022003. The reversal of 939990022001 is 100220099939.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 782559621376 + 157430400625 = 884624^2 + 396775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-939990022001 is a prime.

It is a super-2 number, since 2×939990022001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939990022003) 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, 4653415850 + ... + 4653416051.

It is an arithmetic number, because the mean of its divisors is an integer number (237324213501).

Almost surely, 2^939990022001 is an apocalyptic number.

It is an amenable number.

939990022001 is a deficient number, since it is larger than the sum of its proper divisors (9306832003).

939990022001 is a wasteful number, since it uses less digits than its factorization.

939990022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9306832002.

The product of its (nonzero) digits is 78732, while the sum is 44.

The spelling of 939990022001 in words is "nine hundred thirty-nine billion, nine hundred ninety million, twenty-two thousand, one".