74109769 has 12 divisors (see below), whose sum is σ = 76666500. Its totient is φ = 71633184.

The previous prime is 74109767. The next prime is 74109773. The reversal of 74109769 is 96790147.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6656400 + 67453369 = 2580^2 + 8213^2 .

It is not a de Polignac number, because 74109769 - 2¹ = 74109767 is a prime.

It is a super-2 number, since 2×74109769² = 10984515722466722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74109767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275367 + ... + 275635.

It is an arithmetic number, because the mean of its divisors is an integer number (6388875).

Almost surely, 2^74109769 is an apocalyptic number.

It is an amenable number.

74109769 is a deficient number, since it is larger than the sum of its proper divisors (2556731).

74109769 is a wasteful number, since it uses less digits than its factorization.

74109769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 74109769 is about 8608.7030962858. The cubic root of 74109769 is about 420.0411316482.

The spelling of 74109769 in words is "seventy-four million, one hundred nine thousand, seven hundred sixty-nine".