40569673 has 4 divisors (see below), whose sum is σ = 40865940. Its totient is φ = 40273408.

The previous prime is 40569647. The next prime is 40569703. The reversal of 40569673 is 37696504.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9966649 + 30603024 = 3157^2 + 5532^2 .

It is a cyclic number.

It is not a de Polignac number, because 40569673 - 2¹³ = 40561481 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40560673) 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, 147928 + ... + 148201.

It is an arithmetic number, because the mean of its divisors is an integer number (10216485).

Almost surely, 2^40569673 is an apocalyptic number.

It is an amenable number.

40569673 is a deficient number, since it is larger than the sum of its proper divisors (296267).

40569673 is a wasteful number, since it uses less digits than its factorization.

40569673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296266.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 40569673 is about 6369.4327062934. The cubic root of 40569673 is about 343.6110875412.

It can be divided in two parts, 405696 and 73, that added together give a square (405769 = 637²).

The spelling of 40569673 in words is "forty million, five hundred sixty-nine thousand, six hundred seventy-three".