2190739 has 8 divisors (see below), whose sum is σ = 2395008. Its totient is φ = 1994880.

The previous prime is 2190737. The next prime is 2190751. The reversal of 2190739 is 9370912.

2190739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2190739 - 2¹ = 2190737 is a prime.

It is a super-2 number, since 2×2190739² = 9598674732242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2190739.

It is not an unprimeable number, because it can be changed into a prime (2190737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1552 + ... + 2605.

It is an arithmetic number, because the mean of its divisors is an integer number (299376).

2^2190739 is an apocalyptic number.

2190739 is a deficient number, since it is larger than the sum of its proper divisors (204269).

2190739 is a wasteful number, since it uses less digits than its factorization.

2190739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 2190739 is about 1480.1145225961. The cubic root of 2190739 is about 129.8763913815.

The spelling of 2190739 in words is "two million, one hundred ninety thousand, seven hundred thirty-nine".