40891383 has 12 divisors (see below), whose sum is σ = 63609000. Its totient is φ = 25163856.

The previous prime is 40891379. The next prime is 40891399. The reversal of 40891383 is 38319804.

It is not a de Polignac number, because 40891383 - 2² = 40891379 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40891303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174633 + ... + 174866.

It is an arithmetic number, because the mean of its divisors is an integer number (5300750).

Almost surely, 2^40891383 is an apocalyptic number.

40891383 is a deficient number, since it is larger than the sum of its proper divisors (22717617).

40891383 is a wasteful number, since it uses less digits than its factorization.

40891383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349518 (or 349515 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 40891383 is about 6394.6370499036. The cubic root of 40891383 is about 344.5169547388.

The spelling of 40891383 in words is "forty million, eight hundred ninety-one thousand, three hundred eighty-three".