43949240 has 16 divisors (see below), whose sum is σ = 98885880. Its totient is φ = 17579680.

The previous prime is 43949237. The next prime is 43949249. The reversal of 43949240 is 4294934.

It is a self number, because there is not a number n which added to its sum of digits gives 43949240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43949249) 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, 549326 + ... + 549405.

Almost surely, 2^43949240 is an apocalyptic number.

43949240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43949240 is an abundant number, since it is smaller than the sum of its proper divisors (54936640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43949240 is a wasteful number, since it uses less digits than its factorization.

43949240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098742 (or 1098738 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 43949240 is about 6629.4222976063. The cubic root of 43949240 is about 352.8990233535.

The spelling of 43949240 in words is "forty-three million, nine hundred forty-nine thousand, two hundred forty".