2493739 has 4 divisors (see below), whose sum is σ = 2579760. Its totient is φ = 2407720.

The previous prime is 2493727. The next prime is 2493749. The reversal of 2493739 is 9373942.

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 2493739 - 2⁵ = 2493707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2493698 and 2493707.

It is not an unprimeable number, because it can be changed into a prime (2493709) 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, 42967 + ... + 43024.

It is an arithmetic number, because the mean of its divisors is an integer number (644940).

2^2493739 is an apocalyptic number.

2493739 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2493739 is a deficient number, since it is larger than the sum of its proper divisors (86021).

2493739 is an equidigital number, since it uses as much as digits as its factorization.

2493739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86020.

The product of its digits is 40824, while the sum is 37.

The square root of 2493739 is about 1579.1576868698. The cubic root of 2493739 is about 135.6074863239.

It can be divided in two parts, 24937 and 39, that added together give a triangular number (24976 = T₂₂₃).

The spelling of 2493739 in words is "two million, four hundred ninety-three thousand, seven hundred thirty-nine".