43958140 has 12 divisors (see below), whose sum is σ = 92312136. Its totient is φ = 17583248.

The previous prime is 43958137. The next prime is 43958149. The reversal of 43958140 is 4185934.

It is a junction number, because it is equal to n+sod(n) for n = 43958096 and 43958105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43958149) 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, 1098934 + ... + 1098973.

It is an arithmetic number, because the mean of its divisors is an integer number (7692678).

Almost surely, 2^43958140 is an apocalyptic number.

It is an amenable number.

43958140 is an abundant number, since it is smaller than the sum of its proper divisors (48353996).

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

43958140 is a wasteful number, since it uses less digits than its factorization.

43958140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197916 (or 2197914 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 43958140 is about 6630.0935136693. The cubic root of 43958140 is about 352.9228431762.

The spelling of 43958140 in words is "forty-three million, nine hundred fifty-eight thousand, one hundred forty".