40891364 has 12 divisors (see below), whose sum is σ = 73494204. Its totient is φ = 19893024.

The previous prime is 40891351. The next prime is 40891369. The reversal of 40891364 is 46319804.

It can be written as a sum of positive squares in 2 ways, for example, as 21160000 + 19731364 = 4600^2 + 4442^2 .

It is not an unprimeable number, because it can be changed into a prime (40891369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137999 + ... + 138294.

It is an arithmetic number, because the mean of its divisors is an integer number (6124517).

Almost surely, 2^40891364 is an apocalyptic number.

It is an amenable number.

40891364 is a deficient number, since it is larger than the sum of its proper divisors (32602840).

40891364 is a wasteful number, since it uses less digits than its factorization.

40891364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276334 (or 276332 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 40891364 is about 6394.6355642836. The cubic root of 40891364 is about 344.5169013793.

The spelling of 40891364 in words is "forty million, eight hundred ninety-one thousand, three hundred sixty-four".