74329381 has 4 divisors (see below), whose sum is σ = 84947872. Its totient is φ = 63710892.

The previous prime is 74329357. The next prime is 74329393. The reversal of 74329381 is 18392347.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 74329381 - 2¹¹ = 74327333 is a prime.

It is a super-2 number, since 2×74329381² = 11049713759686322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74329381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74329481) 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 3 ways as a sum of consecutive naturals, for example, 5309235 + ... + 5309248.

It is an arithmetic number, because the mean of its divisors is an integer number (21236968).

Almost surely, 2^74329381 is an apocalyptic number.

It is an amenable number.

74329381 is a deficient number, since it is larger than the sum of its proper divisors (10618491).

74329381 is a wasteful number, since it uses less digits than its factorization.

74329381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10618490.

The product of its digits is 36288, while the sum is 37.

The square root of 74329381 is about 8621.4488921526. The cubic root of 74329381 is about 420.4556298775.

The spelling of 74329381 in words is "seventy-four million, three hundred twenty-nine thousand, three hundred eighty-one".