74499943 has 8 divisors (see below), whose sum is σ = 86880800. Its totient is φ = 63856800.

The previous prime is 74499917. The next prime is 74499989. The reversal of 74499943 is 34999447.

It is not a de Polignac number, because 74499943 - 2¹⁷ = 74368871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74499043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108258 + ... + 108943.

It is an arithmetic number, because the mean of its divisors is an integer number (10860100).

Almost surely, 2^74499943 is an apocalyptic number.

74499943 is a deficient number, since it is larger than the sum of its proper divisors (12380857).

74499943 is an equidigital number, since it uses as much as digits as its factorization.

74499943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217222 (or 217208 counting only the distinct ones).

The product of its digits is 979776, while the sum is 49.

The square root of 74499943 is about 8631.3349488941. The cubic root of 74499943 is about 420.7769876353.

The spelling of 74499943 in words is "seventy-four million, four hundred ninety-nine thousand, nine hundred forty-three".