43985390 has 16 divisors (see below), whose sum is σ = 79591680. Its totient is φ = 17501280.

The previous prime is 43985377. The next prime is 43985419. The reversal of 43985390 is 9358934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9605 + ... + 13424.

It is an arithmetic number, because the mean of its divisors is an integer number (4974480).

Almost surely, 2^43985390 is an apocalyptic number.

43985390 is a deficient number, since it is larger than the sum of its proper divisors (35606290).

43985390 is a wasteful number, since it uses less digits than its factorization.

43985390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23227.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 43985390 is about 6632.1482190916. The cubic root of 43985390 is about 352.9957546697.

The spelling of 43985390 in words is "forty-three million, nine hundred eighty-five thousand, three hundred ninety".