2957839 has 4 divisors (see below), whose sum is σ = 2995360. Its totient is φ = 2920320.

The previous prime is 2957833. The next prime is 2957861. The reversal of 2957839 is 9387592.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2957839 - 2³ = 2957831 is a prime.

It is a Duffinian number.

2957839 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2957795 and 2957804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2957831) 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, 18642 + ... + 18799.

It is an arithmetic number, because the mean of its divisors is an integer number (748840).

2^2957839 is an apocalyptic number.

2957839 is a deficient number, since it is larger than the sum of its proper divisors (37521).

2957839 is an equidigital number, since it uses as much as digits as its factorization.

2957839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37520.

The product of its digits is 136080, while the sum is 43.

The square root of 2957839 is about 1719.8369108727. The cubic root of 2957839 is about 143.5461372364.

The spelling of 2957839 in words is "two million, nine hundred fifty-seven thousand, eight hundred thirty-nine".