40558994 has 32 divisors (see below), whose sum is σ = 72385920. Its totient is φ = 16676352.

The previous prime is 40558967. The next prime is 40558997. The reversal of 40558994 is 49985504.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40558997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114722 + ... + 115074.

It is an arithmetic number, because the mean of its divisors is an integer number (2262060).

Almost surely, 2^40558994 is an apocalyptic number.

40558994 is a deficient number, since it is larger than the sum of its proper divisors (31826926).

40558994 is a wasteful number, since it uses less digits than its factorization.

40558994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 40558994 is about 6368.5943504042. The cubic root of 40558994 is about 343.5809357510.

The spelling of 40558994 in words is "forty million, five hundred fifty-eight thousand, nine hundred ninety-four".