43454791 has 2 divisors, whose sum is σ = 43454792. Its totient is φ = 43454790.

The previous prime is 43454779. The next prime is 43454833. The reversal of 43454791 is 19745434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43454791 - 2¹⁵ = 43422023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43454791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43494791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21727395 + 21727396.

It is an arithmetic number, because the mean of its divisors is an integer number (21727396).

Almost surely, 2^43454791 is an apocalyptic number.

43454791 is a deficient number, since it is larger than the sum of its proper divisors (1).

43454791 is an equidigital number, since it uses as much as digits as its factorization.

43454791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 43454791 is about 6592.0248027446. The cubic root of 43454791 is about 351.5706040509.

It can be divided in two parts, 434 and 54791, that added together give a square (55225 = 235²).

The spelling of 43454791 in words is "forty-three million, four hundred fifty-four thousand, seven hundred ninety-one".