75443769 has 12 divisors (see below), whose sum is σ = 109445076. Its totient is φ = 50078592.

The previous prime is 75443759. The next prime is 75443783. The reversal of 75443769 is 96734457.

It can be written as a sum of positive squares in 2 ways, for example, as 48818169 + 26625600 = 6987^2 + 5160^2 .

It is not a de Polignac number, because 75443769 - 2²⁰ = 74395193 is a prime.

It is a super-2 number, since 2×75443769² = 11383524561850722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (75443759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15892 + ... + 20085.

It is an arithmetic number, because the mean of its divisors is an integer number (9120423).

Almost surely, 2^75443769 is an apocalyptic number.

It is an amenable number.

75443769 is a deficient number, since it is larger than the sum of its proper divisors (34001307).

75443769 is a wasteful number, since it uses less digits than its factorization.

75443769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36216 (or 36213 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 75443769 is about 8685.8372653418. The cubic root of 75443769 is about 422.5464514827.

The spelling of 75443769 in words is "seventy-five million, four hundred forty-three thousand, seven hundred sixty-nine".