2139441 has 4 divisors (see below), whose sum is σ = 2852592. Its totient is φ = 1426292.

The previous prime is 2139427. The next prime is 2139461. The reversal of 2139441 is 1449312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2139441 - 2⁵ = 2139409 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2139461) 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, 356571 + ... + 356576.

It is an arithmetic number, because the mean of its divisors is an integer number (713148).

2^2139441 is an apocalyptic number.

It is an amenable number.

2139441 is a deficient number, since it is larger than the sum of its proper divisors (713151).

2139441 is an equidigital number, since it uses as much as digits as its factorization.

2139441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713150.

The product of its digits is 864, while the sum is 24.

The square root of 2139441 is about 1462.6828090875. The cubic root of 2139441 is about 128.8546527126.

The spelling of 2139441 in words is "two million, one hundred thirty-nine thousand, four hundred forty-one".