40743591 has 16 divisors (see below), whose sum is σ = 63258624. Its totient is φ = 22842144.

The previous prime is 40743583. The next prime is 40743601. The reversal of 40743591 is 19534704.

It is not a de Polignac number, because 40743591 - 2³ = 40743583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40743091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17191 + ... + 19416.

It is an arithmetic number, because the mean of its divisors is an integer number (3953664).

Almost surely, 2^40743591 is an apocalyptic number.

40743591 is a deficient number, since it is larger than the sum of its proper divisors (22515033).

40743591 is a wasteful number, since it uses less digits than its factorization.

40743591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36670.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 40743591 is about 6383.0706560401. The cubic root of 40743591 is about 344.1013959934.

The spelling of 40743591 in words is "forty million, seven hundred forty-three thousand, five hundred ninety-one".