40575994 has 4 divisors (see below), whose sum is σ = 60863994. Its totient is φ = 20287996.

The previous prime is 40575967. The next prime is 40576007. The reversal of 40575994 is 49957504.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40259025 + 316969 = 6345^2 + 563^2 .

It is a super-2 number, since 2×40575994² = 3292822578176072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40575994.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10143997 + ... + 10144000.

Almost surely, 2^40575994 is an apocalyptic number.

40575994 is a deficient number, since it is larger than the sum of its proper divisors (20288000).

40575994 is a wasteful number, since it uses less digits than its factorization.

40575994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20287999.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 40575994 is about 6369.9288850033. The cubic root of 40575994 is about 343.6289321752.

The spelling of 40575994 in words is "forty million, five hundred seventy-five thousand, nine hundred ninety-four".