43974855 has 24 divisors (see below), whose sum is σ = 76658400. Its totient is φ = 23319360.

The previous prime is 43974841. The next prime is 43974859. The reversal of 43974855 is 55847934.

It is not a de Polignac number, because 43974855 - 2⁵ = 43974823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 43974855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43974859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5446 + ... + 10844.

It is an arithmetic number, because the mean of its divisors is an integer number (3194100).

Almost surely, 2^43974855 is an apocalyptic number.

43974855 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43974855 is a deficient number, since it is larger than the sum of its proper divisors (32683545).

43974855 is a wasteful number, since it uses less digits than its factorization.

43974855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591 (or 5588 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 43974855 is about 6631.3539341525. The cubic root of 43974855 is about 352.9675702566.

The spelling of 43974855 in words is "forty-three million, nine hundred seventy-four thousand, eight hundred fifty-five".