40891340 has 24 divisors (see below), whose sum is σ = 98139552. Its totient is φ = 14019840.

The previous prime is 40891303. The next prime is 40891343. The reversal of 40891340 is 4319804.

It is not an unprimeable number, because it can be changed into a prime (40891343) 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 7 ways as a sum of consecutive naturals, for example, 145901 + ... + 146180.

It is an arithmetic number, because the mean of its divisors is an integer number (4089148).

Almost surely, 2^40891340 is an apocalyptic number.

It is an amenable number.

40891340 is an abundant number, since it is smaller than the sum of its proper divisors (57248212).

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

40891340 is a wasteful number, since it uses less digits than its factorization.

40891340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292097 (or 292095 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 40891340 is about 6394.6336877103. The cubic root of 40891340 is about 344.5168339779.

The spelling of 40891340 in words is "forty million, eight hundred ninety-one thousand, three hundred forty".