7220001989 has 16 divisors (see below), whose sum is σ = 7477614144. Its totient is φ = 6966960000.

The previous prime is 7220001973. The next prime is 7220002007. The reversal of 7220001989 is 9891000227.

It is a cyclic number.

It is not a de Polignac number, because 7220001989 - 2⁴ = 7220001973 is a prime.

It is a super-2 number, since 2×7220001989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220001589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1309739 + ... + 1315239.

It is an arithmetic number, because the mean of its divisors is an integer number (467350884).

Almost surely, 2^7220001989 is an apocalyptic number.

It is an amenable number.

7220001989 is a deficient number, since it is larger than the sum of its proper divisors (257612155).

7220001989 is a wasteful number, since it uses less digits than its factorization.

7220001989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5908.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 7220001989 is about 84970.5948490417. The cubic root of 7220001989 is about 1932.7652370455.

The spelling of 7220001989 in words is "seven billion, two hundred twenty million, one thousand, nine hundred eighty-nine".