40547669 has 4 divisors (see below), whose sum is σ = 42932844. Its totient is φ = 38162496.

The previous prime is 40547657. The next prime is 40547681. The reversal of 40547669 is 96674504.

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

It is an interprime number because it is at equal distance from previous prime (40547657) and next prime (40547681).

It can be written as a sum of positive squares in 2 ways, for example, as 24850225 + 15697444 = 4985^2 + 3962^2 .

It is a cyclic number.

It is not a de Polignac number, because 40547669 - 2¹⁶ = 40482133 is a prime.

It is a super-2 number, since 2×40547669² = 3288226922667122, 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 (40547609) 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, 1192562 + ... + 1192595.

It is an arithmetic number, because the mean of its divisors is an integer number (10733211).

Almost surely, 2^40547669 is an apocalyptic number.

It is an amenable number.

40547669 is a deficient number, since it is larger than the sum of its proper divisors (2385175).

40547669 is a wasteful number, since it uses less digits than its factorization.

40547669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385174.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 40547669 is about 6367.7051596317. The cubic root of 40547669 is about 343.5489542188.

The spelling of 40547669 in words is "forty million, five hundred forty-seven thousand, six hundred sixty-nine".