40045937 has 4 divisors (see below), whose sum is σ = 40058880. Its totient is φ = 40032996.

The previous prime is 40045933. The next prime is 40045987. The reversal of 40045937 is 73954004.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40045937 - 2² = 40045933 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40045933) 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, 1208 + ... + 9030.

It is an arithmetic number, because the mean of its divisors is an integer number (10014720).

Almost surely, 2^40045937 is an apocalyptic number.

It is an amenable number.

40045937 is a deficient number, since it is larger than the sum of its proper divisors (12943).

40045937 is an equidigital number, since it uses as much as digits as its factorization.

40045937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12942.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 40045937 is about 6328.1859169907. The cubic root of 40045937 is about 342.1260578590.

The spelling of 40045937 in words is "forty million, forty-five thousand, nine hundred thirty-seven".