40830918 has 16 divisors (see below), whose sum is σ = 81838080. Its totient is φ = 13580936.

The previous prime is 40830883. The next prime is 40830919. The reversal of 40830918 is 81903804.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40830919) 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, 4230 + ... + 9977.

It is an arithmetic number, because the mean of its divisors is an integer number (5114880).

Almost surely, 2^40830918 is an apocalyptic number.

40830918 is an abundant number, since it is smaller than the sum of its proper divisors (41007162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40830918 is a wasteful number, since it uses less digits than its factorization.

40830918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14691.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 40830918 is about 6389.9075110677. The cubic root of 40830918 is about 344.3470616211.

The spelling of 40830918 in words is "forty million, eight hundred thirty thousand, nine hundred eighteen".