4540139 has 8 divisors (see below), whose sum is σ = 4898880. Its totient is φ = 4191616.

The previous prime is 4540127. The next prime is 4540147. The reversal of 4540139 is 9310454.

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

It is a cyclic number.

It is not a de Polignac number, because 4540139 - 2⁸ = 4539883 is a prime.

It is a super-2 number, since 2×4540139² = 41225724278642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540189) 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, 1619 + ... + 3420.

It is an arithmetic number, because the mean of its divisors is an integer number (612360).

Almost surely, 2^4540139 is an apocalyptic number.

4540139 is a deficient number, since it is larger than the sum of its proper divisors (358741).

4540139 is a wasteful number, since it uses less digits than its factorization.

4540139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5109.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 4540139 is about 2130.7601929828. The cubic root of 4540139 is about 165.5857844262.

The spelling of 4540139 in words is "four million, five hundred forty thousand, one hundred thirty-nine".