43840497 has 16 divisors (see below), whose sum is σ = 59754240. Its totient is φ = 28584192.

The previous prime is 43840493. The next prime is 43840549. The reversal of 43840497 is 79404834.

It is not a de Polignac number, because 43840497 - 2² = 43840493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43840493) 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, 25963 + ... + 27599.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^43840497 is an apocalyptic number.

It is an amenable number.

43840497 is a deficient number, since it is larger than the sum of its proper divisors (15913743).

43840497 is a wasteful number, since it uses less digits than its factorization.

43840497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 43840497 is about 6621.2156738774. The cubic root of 43840497 is about 352.6077252365.

The spelling of 43840497 in words is "forty-three million, eight hundred forty thousand, four hundred ninety-seven".