244155223989 has 12 divisors (see below), whose sum is σ = 352680418272. Its totient is φ = 162764721000.

The previous prime is 244155223951. The next prime is 244155223999. The reversal of 244155223989 is 989322551442.

244155223989 is a `hidden beast` number, since 2 + 4 + 4 + 1 + 5 + 522 + 39 + 89 = 666.

It is not a de Polignac number, because 244155223989 - 2⁸ = 244155223733 is a prime.

It is a super-2 number, since 2×244155223989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244155223999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157377 + ... + 716294.

It is an arithmetic number, because the mean of its divisors is an integer number (29390034856).

Almost surely, 2^244155223989 is an apocalyptic number.

It is an amenable number.

244155223989 is a deficient number, since it is larger than the sum of its proper divisors (108525194283).

244155223989 is a wasteful number, since it uses less digits than its factorization.

244155223989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904728 (or 904725 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 244155223989 in words is "two hundred forty-four billion, one hundred fifty-five million, two hundred twenty-three thousand, nine hundred eighty-nine".