6423739 has 16 divisors (see below), whose sum is σ = 8114688. Its totient is φ = 4954752.

The previous prime is 6423737. The next prime is 6423749. The reversal of 6423739 is 9373246.

It is not a de Polignac number, because 6423739 - 2¹ = 6423737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6423733) 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, 1564 + ... + 3910.

It is an arithmetic number, because the mean of its divisors is an integer number (507168).

Almost surely, 2^6423739 is an apocalyptic number.

6423739 is a deficient number, since it is larger than the sum of its proper divisors (1690949).

6423739 is a wasteful number, since it uses less digits than its factorization.

6423739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394.

The product of its digits is 27216, while the sum is 34.

The square root of 6423739 is about 2534.5096172633. The cubic root of 6423739 is about 185.8928256817.

The spelling of 6423739 in words is "six million, four hundred twenty-three thousand, seven hundred thirty-nine".