40278933 has 24 divisors (see below), whose sum is σ = 63115416. Its totient is φ = 24652800.

The previous prime is 40278923. The next prime is 40278989. The reversal of 40278933 is 33987204.

It can be written as a sum of positive squares in 4 ways, for example, as 815409 + 39463524 = 903^2 + 6282^2 .

It is not a de Polignac number, because 40278933 - 2⁸ = 40278677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40278923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3063 + ... + 9483.

It is an arithmetic number, because the mean of its divisors is an integer number (2629809).

Almost surely, 2^40278933 is an apocalyptic number.

It is an amenable number.

40278933 is a deficient number, since it is larger than the sum of its proper divisors (22836483).

40278933 is a wasteful number, since it uses less digits than its factorization.

40278933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485 (or 6482 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 40278933 is about 6346.5686004328. The cubic root of 40278933 is about 342.7882965187.

The spelling of 40278933 in words is "forty million, two hundred seventy-eight thousand, nine hundred thirty-three".