40091396 has 12 divisors (see below), whose sum is σ = 71310540. Its totient is φ = 19716960.

The previous prime is 40091377. The next prime is 40091413. The reversal of 40091396 is 69319004.

40091396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 577600 + 39513796 = 760^2 + 6286^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 81911 + ... + 82398.

It is an arithmetic number, because the mean of its divisors is an integer number (5942545).

Almost surely, 2^40091396 is an apocalyptic number.

It is an amenable number.

40091396 is a deficient number, since it is larger than the sum of its proper divisors (31219144).

40091396 is a wasteful number, since it uses less digits than its factorization.

40091396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164374 (or 164372 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 40091396 is about 6331.7766858916. The cubic root of 40091396 is about 342.2554661364.

The spelling of 40091396 in words is "forty million, ninety-one thousand, three hundred ninety-six".