40045837 has 16 divisors (see below), whose sum is σ = 44352000. Its totient is φ = 35930304.

The previous prime is 40045777. The next prime is 40045843. The reversal of 40045837 is 73854004.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40045837 is a prime.

It is a super-2 number, since 2×40045837² = 3207338122061138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40045799 and 40045808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40045847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83364 + ... + 83842.

It is an arithmetic number, because the mean of its divisors is an integer number (2772000).

Almost surely, 2^40045837 is an apocalyptic number.

It is an amenable number.

40045837 is a deficient number, since it is larger than the sum of its proper divisors (4306163).

40045837 is a wasteful number, since it uses less digits than its factorization.

40045837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 40045837 is about 6328.1780158273. The cubic root of 40045837 is about 342.1257730808.

The spelling of 40045837 in words is "forty million, forty-five thousand, eight hundred thirty-seven".