40978259 has 6 divisors (see below), whose sum is σ = 47668644. Its totient is φ = 35124180.

The previous prime is 40978243. The next prime is 40978261. The reversal of 40978259 is 95287904.

It is a happy number.

40978259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40978259 - 2⁴ = 40978243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40978159) 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 5 ways as a sum of consecutive naturals, for example, 418097 + ... + 418194.

It is an arithmetic number, because the mean of its divisors is an integer number (7944774).

Almost surely, 2^40978259 is an apocalyptic number.

40978259 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

40978259 is a deficient number, since it is larger than the sum of its proper divisors (6690385).

40978259 is an equidigital number, since it uses as much as digits as its factorization.

40978259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836305 (or 836298 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 40978259 is about 6401.4263254372. The cubic root of 40978259 is about 344.7607639196.

The spelling of 40978259 in words is "forty million, nine hundred seventy-eight thousand, two hundred fifty-nine".