747385947 has 40 divisors (see below), whose sum is σ = 1391968512. Its totient is φ = 388249200.

The previous prime is 747385939. The next prime is 747385949. The reversal of 747385947 is 749583747.

747385947 is a `hidden beast` number, since 7 + 47 + 3 + 8 + 594 + 7 = 666.

It is not a de Polignac number, because 747385947 - 2³ = 747385939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 747385893 and 747385902.

It is not an unprimeable number, because it can be changed into a prime (747385949) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53679 + ... + 66152.

Almost surely, 2^747385947 is an apocalyptic number.

747385947 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

747385947 is a deficient number, since it is larger than the sum of its proper divisors (644582565).

747385947 is a wasteful number, since it uses less digits than its factorization.

747385947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119861 (or 119852 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The square root of 747385947 is about 27338.3603568319. The cubic root of 747385947 is about 907.5035011135.

The spelling of 747385947 in words is "seven hundred forty-seven million, three hundred eighty-five thousand, nine hundred forty-seven".