220040001989 has 4 divisors (see below), whose sum is σ = 220073617824. Its totient is φ = 220006386156.

The previous prime is 220040001931. The next prime is 220040002043. The reversal of 220040001989 is 989100040022.

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 220040001989 - 2⁸ = 220040001733 is a prime.

It is a super-2 number, since 2×220040001989² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220040001919) 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, 16798097 + ... + 16811190.

It is an arithmetic number, because the mean of its divisors is an integer number (55018404456).

Almost surely, 2^220040001989 is an apocalyptic number.

It is an amenable number.

220040001989 is a deficient number, since it is larger than the sum of its proper divisors (33615835).

220040001989 is an equidigital number, since it uses as much as digits as its factorization.

220040001989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33615834.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 220040001989 in words is "two hundred twenty billion, forty million, one thousand, nine hundred eighty-nine".