747394385 has 4 divisors (see below), whose sum is σ = 896873268. Its totient is φ = 597915504.

The previous prime is 747394381. The next prime is 747394391. The reversal of 747394385 is 583493747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583493747 = 151 ⋅3864197.

It can be written as a sum of positive squares in 2 ways, for example, as 492129856 + 255264529 = 22184^2 + 15977^2 .

It is a cyclic number.

It is not a de Polignac number, because 747394385 - 2² = 747394381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747394381) 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, 74739434 + ... + 74739443.

It is an arithmetic number, because the mean of its divisors is an integer number (224218317).

Almost surely, 2^747394385 is an apocalyptic number.

It is an amenable number.

747394385 is a deficient number, since it is larger than the sum of its proper divisors (149478883).

747394385 is a wasteful number, since it uses less digits than its factorization.

747394385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149478882.

The product of its digits is 2540160, while the sum is 50.

The square root of 747394385 is about 27338.5146816721. The cubic root of 747394385 is about 907.5069163439.

The spelling of 747394385 in words is "seven hundred forty-seven million, three hundred ninety-four thousand, three hundred eighty-five".