74135389 has 4 divisors (see below), whose sum is σ = 74701440. Its totient is φ = 73569340.

The previous prime is 74135381. The next prime is 74135401. The reversal of 74135389 is 98353147.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98353147 = 167 ⋅588941.

It is a cyclic number.

It is not a de Polignac number, because 74135389 - 2³ = 74135381 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74135381) 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, 282829 + ... + 283090.

It is an arithmetic number, because the mean of its divisors is an integer number (18675360).

Almost surely, 2^74135389 is an apocalyptic number.

It is an amenable number.

74135389 is a deficient number, since it is larger than the sum of its proper divisors (566051).

74135389 is a wasteful number, since it uses less digits than its factorization.

74135389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566050.

The product of its digits is 90720, while the sum is 40.

The square root of 74135389 is about 8610.1909967201. The cubic root of 74135389 is about 420.0895292890.

The spelling of 74135389 in words is "seventy-four million, one hundred thirty-five thousand, three hundred eighty-nine".