43849069 has 12 divisors (see below), whose sum is σ = 51035292. Its totient is φ = 37516160.

The previous prime is 43849067. The next prime is 43849081. The reversal of 43849069 is 96094834.

It can be written as a sum of positive squares in 2 ways, for example, as 41126569 + 2722500 = 6413^2 + 1650^2 .

It is not a de Polignac number, because 43849069 - 2¹ = 43849067 is a prime.

It is a super-2 number, since 2×43849069² = 3845481704333522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43849067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8602 + ... + 12715.

It is an arithmetic number, because the mean of its divisors is an integer number (4252941).

Almost surely, 2^43849069 is an apocalyptic number.

It is an amenable number.

43849069 is a deficient number, since it is larger than the sum of its proper divisors (7186223).

43849069 is a wasteful number, since it uses less digits than its factorization.

43849069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21356 (or 21345 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 43849069 is about 6621.8629553925. The cubic root of 43849069 is about 352.6307051801.

The spelling of 43849069 in words is "forty-three million, eight hundred forty-nine thousand, sixty-nine".