1994739 has 8 divisors (see below), whose sum is σ = 2692032. Its totient is φ = 1313640.

The previous prime is 1994717. The next prime is 1994743. The reversal of 1994739 is 9374991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1994739 - 2⁸ = 1994483 is a prime.

It is a super-4 number, since 4×1994739⁴ (a number of 26 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1994739.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994779) 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, 3757 + ... + 4254.

It is an arithmetic number, because the mean of its divisors is an integer number (336504).

2^1994739 is an apocalyptic number.

1994739 is a deficient number, since it is larger than the sum of its proper divisors (697293).

1994739 is an equidigital number, since it uses as much as digits as its factorization.

1994739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8097.

The product of its digits is 61236, while the sum is 42.

The square root of 1994739 is about 1412.3522931620. The cubic root of 1994739 is about 125.8815339029.

The spelling of 1994739 in words is "one million, nine hundred ninety-four thousand, seven hundred thirty-nine".