2387739 has 4 divisors (see below), whose sum is σ = 3183656. Its totient is φ = 1591824.

The previous prime is 2387729. The next prime is 2387753. The reversal of 2387739 is 9377832.

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

It is not a de Polignac number, because 2387739 - 2¹² = 2383643 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2387697 and 2387706.

It is not an unprimeable number, because it can be changed into a prime (2387729) 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, 397954 + ... + 397959.

It is an arithmetic number, because the mean of its divisors is an integer number (795914).

2^2387739 is an apocalyptic number.

2387739 is a deficient number, since it is larger than the sum of its proper divisors (795917).

2387739 is an equidigital number, since it uses as much as digits as its factorization.

2387739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795916.

The product of its digits is 63504, while the sum is 39.

The square root of 2387739 is about 1545.2310506847. The cubic root of 2387739 is about 133.6582029440.

The spelling of 2387739 in words is "two million, three hundred eighty-seven thousand, seven hundred thirty-nine".