2137439 has 4 divisors (see below), whose sum is σ = 2149560. Its totient is φ = 2125320.

The previous prime is 2137423. The next prime is 2137441. The reversal of 2137439 is 9347312.

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 2137439 - 2⁴ = 2137423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2137409) 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, 5792 + ... + 6149.

It is an arithmetic number, because the mean of its divisors is an integer number (537390).

2^2137439 is an apocalyptic number.

2137439 is a deficient number, since it is larger than the sum of its proper divisors (12121).

2137439 is a wasteful number, since it uses less digits than its factorization.

2137439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12120.

The product of its digits is 4536, while the sum is 29.

The square root of 2137439 is about 1461.9982900127. The cubic root of 2137439 is about 128.8144478925.

The spelling of 2137439 in words is "two million, one hundred thirty-seven thousand, four hundred thirty-nine".