2723139 has 10 divisors (see below), whose sum is σ = 4068020. Its totient is φ = 1815372.

The previous prime is 2723113. The next prime is 2723143. The reversal of 2723139 is 9313272.

It is not a de Polignac number, because 2723139 - 2⁵ = 2723107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2723159) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16729 + ... + 16890.

It is an arithmetic number, because the mean of its divisors is an integer number (406802).

2^2723139 is an apocalyptic number.

2723139 is a deficient number, since it is larger than the sum of its proper divisors (1344881).

2723139 is an equidigital number, since it uses as much as digits as its factorization.

2723139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33631 (or 33622 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 2723139 is about 1650.1936250028. The cubic root of 2723139 is about 139.6443182142.

The spelling of 2723139 in words is "two million, seven hundred twenty-three thousand, one hundred thirty-nine".