74154393 has 8 divisors (see below), whose sum is σ = 109858400. Its totient is φ = 49436244.

The previous prime is 74154389. The next prime is 74154407. The reversal of 74154393 is 39345147.

It is not a de Polignac number, because 74154393 - 2² = 74154389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74154373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1373203 + ... + 1373256.

It is an arithmetic number, because the mean of its divisors is an integer number (13732300).

Almost surely, 2^74154393 is an apocalyptic number.

It is an amenable number.

74154393 is a deficient number, since it is larger than the sum of its proper divisors (35704007).

74154393 is a wasteful number, since it uses less digits than its factorization.

74154393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746468 (or 2746462 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 74154393 is about 8611.2945019898. The cubic root of 74154393 is about 420.1254217261.

It can be divided in two parts, 74154 and 393, that added together give a palindrome (74547).

The spelling of 74154393 in words is "seventy-four million, one hundred fifty-four thousand, three hundred ninety-three".