3400839 has 16 divisors (see below), whose sum is σ = 5426400. Its totient is φ = 2092608.

The previous prime is 3400823. The next prime is 3400841. The reversal of 3400839 is 9380043.

It is not a de Polignac number, because 3400839 - 2⁴ = 3400823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3400739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4494 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (339150).

Almost surely, 2^3400839 is an apocalyptic number.

3400839 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3400839 is a deficient number, since it is larger than the sum of its proper divisors (2025561).

3400839 is a wasteful number, since it uses less digits than its factorization.

3400839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9711 (or 9705 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3400839 is about 1844.1363832428. The cubic root of 3400839 is about 150.3818272284.

The spelling of 3400839 in words is "three million, four hundred thousand, eight hundred thirty-nine".