74309769 has 24 divisors (see below), whose sum is σ = 109137600. Its totient is φ = 48716640.

The previous prime is 74309747. The next prime is 74309777. The reversal of 74309769 is 96790347.

It is not a de Polignac number, because 74309769 - 2¹¹ = 74307721 is a prime.

It is a super-2 number, since 2×74309769² = 11043883537666722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74309789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206812 + ... + 207170.

It is an arithmetic number, because the mean of its divisors is an integer number (4547400).

Almost surely, 2^74309769 is an apocalyptic number.

It is an amenable number.

74309769 is a deficient number, since it is larger than the sum of its proper divisors (34827831).

74309769 is a wasteful number, since it uses less digits than its factorization.

74309769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 74309769 is about 8620.3114212887. The cubic root of 74309769 is about 420.4186471885.

It can be divided in two parts, 74309 and 769, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 74309769 in words is "seventy-four million, three hundred nine thousand, seven hundred sixty-nine".