4544139569 has 4 divisors (see below), whose sum is σ = 4574637300. Its totient is φ = 4513641840.

The previous prime is 4544139547. The next prime is 4544139577. The reversal of 4544139569 is 9659314454.

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 1136498944 + 3407640625 = 33712^2 + 58375^2 .

It is a cyclic number.

It is not a de Polignac number, because 4544139569 - 2¹² = 4544135473 is a prime.

It is a super-2 number, since 2×4544139569² = 41298408845103011522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4544139269) 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, 15248642 + ... + 15248939.

It is an arithmetic number, because the mean of its divisors is an integer number (1143659325).

Almost surely, 2^4544139569 is an apocalyptic number.

It is an amenable number.

4544139569 is a deficient number, since it is larger than the sum of its proper divisors (30497731).

4544139569 is a wasteful number, since it uses less digits than its factorization.

4544139569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30497730.

The product of its digits is 2332800, while the sum is 50.

The square root of 4544139569 is about 67410.2334145195. The cubic root of 4544139569 is about 1656.3440576293.

The spelling of 4544139569 in words is "four billion, five hundred forty-four million, one hundred thirty-nine thousand, five hundred sixty-nine".