74243443 has 2 divisors, whose sum is σ = 74243444. Its totient is φ = 74243442.

The previous prime is 74243399. The next prime is 74243461. The reversal of 74243443 is 34434247.

It is a strong prime.

It is an emirp because it is prime and its reverse (34434247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74243443 - 2¹³ = 74235251 is a prime.

It is not a weakly prime, because it can be changed into another prime (74243483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37121721 + 37121722.

It is an arithmetic number, because the mean of its divisors is an integer number (37121722).

Almost surely, 2^74243443 is an apocalyptic number.

74243443 is a deficient number, since it is larger than the sum of its proper divisors (1).

74243443 is an equidigital number, since it uses as much as digits as its factorization.

74243443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 31.

The square root of 74243443 is about 8616.4634856767. The cubic root of 74243443 is about 420.2935268624.

The spelling of 74243443 in words is "seventy-four million, two hundred forty-three thousand, four hundred forty-three".