40204169 has 4 divisors (see below), whose sum is σ = 40406400. Its totient is φ = 40001940.

The previous prime is 40204147. The next prime is 40204189. The reversal of 40204169 is 96140204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40204169 - 2⁸ = 40203913 is a prime.

It is a super-2 number, since 2×40204169² = 3232750409961122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40204139) 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, 100817 + ... + 101214.

It is an arithmetic number, because the mean of its divisors is an integer number (10101600).

Almost surely, 2^40204169 is an apocalyptic number.

It is an amenable number.

40204169 is a deficient number, since it is larger than the sum of its proper divisors (202231).

40204169 is a wasteful number, since it uses less digits than its factorization.

40204169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202230.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40204169 is about 6340.6757526308. The cubic root of 40204169 is about 342.5760755939.

The spelling of 40204169 in words is "forty million, two hundred four thousand, one hundred sixty-nine".