74331398 has 4 divisors (see below), whose sum is σ = 111497100. Its totient is φ = 37165698.

The previous prime is 74331373. The next prime is 74331403. The reversal of 74331398 is 89313347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89313347 = 23 ⋅3883189.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18582848 + ... + 18582851.

It is an arithmetic number, because the mean of its divisors is an integer number (27874275).

Almost surely, 2^74331398 is an apocalyptic number.

74331398 is a deficient number, since it is larger than the sum of its proper divisors (37165702).

74331398 is a wasteful number, since it uses less digits than its factorization.

74331398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37165701.

The product of its digits is 54432, while the sum is 38.

The square root of 74331398 is about 8621.5658670569. The cubic root of 74331398 is about 420.4594330005.

The spelling of 74331398 in words is "seventy-four million, three hundred thirty-one thousand, three hundred ninety-eight".