2139437 has 8 divisors (see below), whose sum is σ = 2249856. Its totient is φ = 2030512.

The previous prime is 2139427. The next prime is 2139461. The reversal of 2139437 is 7349312.

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 2139437 - 2⁶ = 2139373 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 (2139407) 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, 3563 + ... + 4119.

It is an arithmetic number, because the mean of its divisors is an integer number (281232).

2^2139437 is an apocalyptic number.

It is an amenable number.

2139437 is a deficient number, since it is larger than the sum of its proper divisors (110419).

2139437 is a wasteful number, since it uses less digits than its factorization.

2139437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747.

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

The square root of 2139437 is about 1462.6814417364. The cubic root of 2139437 is about 128.8545724083.

The spelling of 2139437 in words is "two million, one hundred thirty-nine thousand, four hundred thirty-seven".