6940459 has 4 divisors (see below), whose sum is σ = 6956104. Its totient is φ = 6924816.

The previous prime is 6940441. The next prime is 6940477. The reversal of 6940459 is 9540496.

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

It is an interprime number because it is at equal distance from previous prime (6940441) and next prime (6940477).

It is a cyclic number.

It is not a de Polignac number, because 6940459 - 2⁷ = 6940331 is a prime.

It is a super-2 number, since 2×6940459² = 96339942261362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6943459) 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, 7137 + ... + 8050.

It is an arithmetic number, because the mean of its divisors is an integer number (1739026).

Almost surely, 2^6940459 is an apocalyptic number.

6940459 is a deficient number, since it is larger than the sum of its proper divisors (15645).

6940459 is a wasteful number, since it uses less digits than its factorization.

6940459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15644.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 6940459 is about 2634.4750900322. The cubic root of 6940459 is about 190.7492025478.

Adding to 6940459 its sum of digits (37), we get a palindrome (6940496).

The spelling of 6940459 in words is "six million, nine hundred forty thousand, four hundred fifty-nine".