40475690 has 8 divisors (see below), whose sum is σ = 72856260. Its totient is φ = 16190272.

The previous prime is 40475683. The next prime is 40475693. The reversal of 40475690 is 9657404.

It can be written as a sum of positive squares in 2 ways, for example, as 40436881 + 38809 = 6359^2 + 197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40475690² = 3276562961952200, 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 40475690.

It is not an unprimeable number, because it can be changed into a prime (40475693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2023775 + ... + 2023794.

Almost surely, 2^40475690 is an apocalyptic number.

40475690 is a deficient number, since it is larger than the sum of its proper divisors (32380570).

40475690 is a wasteful number, since it uses less digits than its factorization.

40475690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047576.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 40475690 is about 6362.0507699955. The cubic root of 40475690 is about 343.3455478944.

The spelling of 40475690 in words is "forty million, four hundred seventy-five thousand, six hundred ninety".