40180933 has 8 divisors (see below), whose sum is σ = 43530200. Its totient is φ = 37088064.

The previous prime is 40180871. The next prime is 40180937. The reversal of 40180933 is 33908104.

It can be written as a sum of positive squares in 4 ways, for example, as 2505889 + 37675044 = 1583^2 + 6138^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40180933 is a prime.

It is a super-2 number, since 2×40180933² = 3229014753500978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40180937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6948 + ... + 11341.

It is an arithmetic number, because the mean of its divisors is an integer number (5441275).

Almost surely, 2^40180933 is an apocalyptic number.

It is an amenable number.

40180933 is a deficient number, since it is larger than the sum of its proper divisors (3349267).

40180933 is an equidigital number, since it uses as much as digits as its factorization.

40180933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18328 (or 18302 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 40180933 is about 6338.8431909931. The cubic root of 40180933 is about 342.5100655930.

The spelling of 40180933 in words is "forty million, one hundred eighty thousand, nine hundred thirty-three".