40074591 has 16 divisors (see below), whose sum is σ = 57021440. Its totient is φ = 24960960.

The previous prime is 40074571. The next prime is 40074649. The reversal of 40074591 is 19547004.

It is a happy number.

It is not a de Polignac number, because 40074591 - 2¹⁵ = 40041823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40074521) 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 15 ways as a sum of consecutive naturals, for example, 655 + ... + 8976.

It is an arithmetic number, because the mean of its divisors is an integer number (3563840).

Almost surely, 2^40074591 is an apocalyptic number.

40074591 is a deficient number, since it is larger than the sum of its proper divisors (16946849).

40074591 is a wasteful number, since it uses less digits than its factorization.

40074591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9726.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 40074591 is about 6330.4495101059. The cubic root of 40074591 is about 342.2076386930.

The spelling of 40074591 in words is "forty million, seventy-four thousand, five hundred ninety-one".