40859390 has 32 divisors (see below), whose sum is σ = 86407776. Its totient is φ = 13714560.

The previous prime is 40859387. The next prime is 40859419. The reversal of 40859390 is 9395804.

40859390 = T₅₄ + T₅₅ + ... + T₆₂₅.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12857 + ... + 15716.

It is an arithmetic number, because the mean of its divisors is an integer number (2700243).

Almost surely, 2^40859390 is an apocalyptic number.

40859390 is an abundant number, since it is smaller than the sum of its proper divisors (45548386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40859390 is a wasteful number, since it uses less digits than its factorization.

40859390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28604.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 40859390 is about 6392.1350110898. The cubic root of 40859390 is about 344.4270824486.

The spelling of 40859390 in words is "forty million, eight hundred fifty-nine thousand, three hundred ninety".