4013545439 has 4 divisors (see below), whose sum is σ = 4070074320. Its totient is φ = 3957016560.

The previous prime is 4013545433. The next prime is 4013545463. The reversal of 4013545439 is 9345453104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4013545439 - 2¹⁶ = 4013479903 is a prime.

It is a super-2 number, since 2×4013545439² = 32217093981835405442, which 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 (4013545433) 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, 28264334 + ... + 28264475.

It is an arithmetic number, because the mean of its divisors is an integer number (1017518580).

Almost surely, 2^4013545439 is an apocalyptic number.

4013545439 is a deficient number, since it is larger than the sum of its proper divisors (56528881).

4013545439 is an equidigital number, since it uses as much as digits as its factorization.

4013545439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56528880.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 4013545439 is about 63352.5487963981. The cubic root of 4013545439 is about 1589.1908701730.

The spelling of 4013545439 in words is "four billion, thirteen million, five hundred forty-five thousand, four hundred thirty-nine".