43940545 has 24 divisors (see below), whose sum is σ = 58988160. Its totient is φ = 31389600.

The previous prime is 43940537. The next prime is 43940569. The reversal of 43940545 is 54504934.

It is a happy number.

It is not a de Polignac number, because 43940545 - 2³ = 43940537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43940545.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35080 + ... + 36310.

It is an arithmetic number, because the mean of its divisors is an integer number (2457840).

Almost surely, 2^43940545 is an apocalyptic number.

It is an amenable number.

43940545 is a deficient number, since it is larger than the sum of its proper divisors (15047615).

43940545 is a wasteful number, since it uses less digits than its factorization.

43940545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 43940545 is about 6628.7664765022. The cubic root of 43940545 is about 352.8757490839.

The spelling of 43940545 in words is "forty-three million, nine hundred forty thousand, five hundred forty-five".