40878983 has 2 divisors, whose sum is σ = 40878984. Its totient is φ = 40878982.

The previous prime is 40878979. The next prime is 40878997. The reversal of 40878983 is 38987804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40878983 - 2² = 40878979 is a prime.

It is a super-2 number, since 2×40878983² = 3342182502228578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40878923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20439491 + 20439492.

It is an arithmetic number, because the mean of its divisors is an integer number (20439492).

Almost surely, 2^40878983 is an apocalyptic number.

40878983 is a deficient number, since it is larger than the sum of its proper divisors (1).

40878983 is an equidigital number, since it uses as much as digits as its factorization.

40878983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 40878983 is about 6393.6674139339. The cubic root of 40878983 is about 344.4821271719.

The spelling of 40878983 in words is "forty million, eight hundred seventy-eight thousand, nine hundred eighty-three".