43972445 has 16 divisors (see below), whose sum is σ = 58905792. Its totient is φ = 31234560.

The previous prime is 43972429. The next prime is 43972447. The reversal of 43972445 is 54427934.

It is not a de Polignac number, because 43972445 - 2⁴ = 43972429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43972399 and 43972408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43972447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6932 + ... + 11661.

It is an arithmetic number, because the mean of its divisors is an integer number (3681612).

Almost surely, 2^43972445 is an apocalyptic number.

It is an amenable number.

43972445 is a deficient number, since it is larger than the sum of its proper divisors (14933347).

43972445 is a wasteful number, since it uses less digits than its factorization.

43972445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18652.

The product of its digits is 120960, while the sum is 38.

The square root of 43972445 is about 6631.1722191480. The cubic root of 43972445 is about 352.9611221217.

The spelling of 43972445 in words is "forty-three million, nine hundred seventy-two thousand, four hundred forty-five".