40819169 has 8 divisors (see below), whose sum is σ = 42558912. Its totient is φ = 39115440.

The previous prime is 40819133. The next prime is 40819199. The reversal of 40819169 is 96191804.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40819169 is a prime.

It is a super-2 number, since 2×40819169² = 3332409115701122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40819199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6677 + ... + 11234.

It is an arithmetic number, because the mean of its divisors is an integer number (5319864).

Almost surely, 2^40819169 is an apocalyptic number.

It is an amenable number.

40819169 is a deficient number, since it is larger than the sum of its proper divisors (1739743).

40819169 is a wasteful number, since it uses less digits than its factorization.

40819169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18007.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 40819169 is about 6388.9881045436. The cubic root of 40819169 is about 344.3140301020.

The spelling of 40819169 in words is "forty million, eight hundred nineteen thousand, one hundred sixty-nine".