74378229 has 4 divisors (see below), whose sum is σ = 99170976. Its totient is φ = 49585484.

The previous prime is 74378191. The next prime is 74378237. The reversal of 74378229 is 92287347.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74378229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74378329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12396369 + ... + 12396374.

It is an arithmetic number, because the mean of its divisors is an integer number (24792744).

Almost surely, 2^74378229 is an apocalyptic number.

It is an amenable number.

74378229 is a deficient number, since it is larger than the sum of its proper divisors (24792747).

74378229 is a wasteful number, since it uses less digits than its factorization.

74378229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24792746.

The product of its digits is 169344, while the sum is 42.

The square root of 74378229 is about 8624.2813613657. The cubic root of 74378229 is about 420.5477151284.

The spelling of 74378229 in words is "seventy-four million, three hundred seventy-eight thousand, two hundred twenty-nine".