40891953 has 32 divisors (see below), whose sum is σ = 61212672. Its totient is φ = 24147200.

The previous prime is 40891951. The next prime is 40891957. The reversal of 40891953 is 35919804.

It is a cyclic number.

It is not a de Polignac number, because 40891953 - 2¹ = 40891951 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40891951) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83038 + ... + 83528.

It is an arithmetic number, because the mean of its divisors is an integer number (1912896).

Almost surely, 2^40891953 is an apocalyptic number.

It is an amenable number.

40891953 is a deficient number, since it is larger than the sum of its proper divisors (20320719).

40891953 is a wasteful number, since it uses less digits than its factorization.

40891953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 40891953 is about 6394.6816183450. The cubic root of 40891953 is about 344.5185555141.

The spelling of 40891953 in words is "forty million, eight hundred ninety-one thousand, nine hundred fifty-three".