2939989 has 8 divisors (see below), whose sum is σ = 3190880. Its totient is φ = 2692656.

The previous prime is 2939977. The next prime is 2939999. The reversal of 2939989 is 9899392.

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 2939989 - 2⁵ = 2939957 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 (2939999) 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, 994 + ... + 2620.

It is an arithmetic number, because the mean of its divisors is an integer number (398860).

2^2939989 is an apocalyptic number.

It is an amenable number.

2939989 is a deficient number, since it is larger than the sum of its proper divisors (250891).

2939989 is a wasteful number, since it uses less digits than its factorization.

2939989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779.

The product of its digits is 314928, while the sum is 49.

The square root of 2939989 is about 1714.6396122801. The cubic root of 2939989 is about 143.2567964677.

The spelling of 2939989 in words is "two million, nine hundred thirty-nine thousand, nine hundred eighty-nine".