40243469 has 16 divisors (see below), whose sum is σ = 47377920. Its totient is φ = 33471360.

The previous prime is 40243459. The next prime is 40243477. The reversal of 40243469 is 96434204.

40243469 = T₇₀ + T₇₁ + ... + T₆₂₂.

It is a cyclic number.

It is not a de Polignac number, because 40243469 - 2¹⁶ = 40177933 is a prime.

It is a super-2 number, since 2×40243469² = 3239073594307922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33137 + ... + 34329.

It is an arithmetic number, because the mean of its divisors is an integer number (2961120).

Almost surely, 2^40243469 is an apocalyptic number.

It is an amenable number.

40243469 is a deficient number, since it is larger than the sum of its proper divisors (7134451).

40243469 is a wasteful number, since it uses less digits than its factorization.

40243469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 40243469 is about 6343.7740344372. The cubic root of 40243469 is about 342.6876631536.

The spelling of 40243469 in words is "forty million, two hundred forty-three thousand, four hundred sixty-nine".