6936439 has 4 divisors (see below), whose sum is σ = 6967224. Its totient is φ = 6905656.

The previous prime is 6936431. The next prime is 6936451. The reversal of 6936439 is 9346396.

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 6936439 - 2³ = 6936431 is a prime.

It is a super-2 number, since 2×6936439² = 96228372001442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6936431) 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, 15052 + ... + 15505.

It is an arithmetic number, because the mean of its divisors is an integer number (1741806).

Almost surely, 2^6936439 is an apocalyptic number.

6936439 is a deficient number, since it is larger than the sum of its proper divisors (30785).

6936439 is a wasteful number, since it uses less digits than its factorization.

6936439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30784.

The product of its digits is 104976, while the sum is 40.

The square root of 6936439 is about 2633.7120191851. The cubic root of 6936439 is about 190.7123673332.

The spelling of 6936439 in words is "six million, nine hundred thirty-six thousand, four hundred thirty-nine".