40678339 has 4 divisors (see below), whose sum is σ = 43807456. Its totient is φ = 37549224.

The previous prime is 40678327. The next prime is 40678349. The reversal of 40678339 is 93387604.

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 40678339 - 2⁹ = 40677827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40678349) 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, 1564539 + ... + 1564564.

It is an arithmetic number, because the mean of its divisors is an integer number (10951864).

Almost surely, 2^40678339 is an apocalyptic number.

40678339 is a deficient number, since it is larger than the sum of its proper divisors (3129117).

40678339 is a wasteful number, since it uses less digits than its factorization.

40678339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129116.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 40678339 is about 6377.9572748647. The cubic root of 40678339 is about 343.9176018395.

The spelling of 40678339 in words is "forty million, six hundred seventy-eight thousand, three hundred thirty-nine".