40744537 has 4 divisors (see below), whose sum is σ = 41055696. Its totient is φ = 40433380.

The previous prime is 40744519. The next prime is 40744541. The reversal of 40744537 is 73544704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40744537 - 2⁷ = 40744409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40744547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155383 + ... + 155644.

It is an arithmetic number, because the mean of its divisors is an integer number (10263924).

Almost surely, 2^40744537 is an apocalyptic number.

It is an amenable number.

40744537 is a deficient number, since it is larger than the sum of its proper divisors (311159).

40744537 is a wasteful number, since it uses less digits than its factorization.

40744537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311158.

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 40744537 is about 6383.1447578760. The cubic root of 40744537 is about 344.1040591312.

It can be divided in two parts, 407 and 44537, that added together give a palindrome (44944).

The spelling of 40744537 in words is "forty million, seven hundred forty-four thousand, five hundred thirty-seven".