1244890004689 has 8 divisors (see below), whose sum is σ = 1288704827520. Its totient is φ = 1201134354000.

The previous prime is 1244890004639. The next prime is 1244890004693. The reversal of 1244890004689 is 9864000984421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1244890004689 - 2²⁷ = 1244755786961 is a prime.

It is a super-2 number, since 2×1244890004689² (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 (1244890004639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14750217 + ... + 14834374.

It is an arithmetic number, because the mean of its divisors is an integer number (161088103440).

Almost surely, 2^{1244890004689} is an apocalyptic number.

It is an amenable number.

1244890004689 is a deficient number, since it is larger than the sum of its proper divisors (43814822831).

1244890004689 is a wasteful number, since it uses less digits than its factorization.

1244890004689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29586071.

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 1244890004689 in words is "one trillion, two hundred forty-four billion, eight hundred ninety million, four thousand, six hundred eighty-nine".