40978339 has 8 divisors (see below), whose sum is σ = 41818640. Its totient is φ = 40144896.

The previous prime is 40978309. The next prime is 40978361. The reversal of 40978339 is 93387904.

40978339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40978339 - 2¹³ = 40970147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40978295 and 40978304.

It is not an unprimeable number, because it can be changed into a prime (40978309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11347 + ... + 14515.

It is an arithmetic number, because the mean of its divisors is an integer number (5227330).

Almost surely, 2^40978339 is an apocalyptic number.

40978339 is a deficient number, since it is larger than the sum of its proper divisors (840301).

40978339 is a wasteful number, since it uses less digits than its factorization.

40978339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 40978339 is about 6401.4325740415. The cubic root of 40978339 is about 344.7609882731.

The spelling of 40978339 in words is "forty million, nine hundred seventy-eight thousand, three hundred thirty-nine".