747149 has 6 divisors (see below), whose sum is σ = 809226. Its totient is φ = 689520.

The previous prime is 747139. The next prime is 747157. The reversal of 747149 is 941747.

It can be written as a sum of positive squares in 3 ways, for example, as 24649 + 722500 = 157^2 + 850^2 .

It is not a de Polignac number, because 747149 - 2¹⁶ = 681613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 747149.

It is not an unprimeable number, because it can be changed into a prime (747139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2042 + ... + 2379.

It is an arithmetic number, because the mean of its divisors is an integer number (134871).

2⁷⁴⁷¹⁴⁹ is an apocalyptic number.

It is an amenable number.

747149 is a deficient number, since it is larger than the sum of its proper divisors (62077).

747149 is a wasteful number, since it uses less digits than its factorization.

747149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447 (or 4434 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 747149 is about 864.3778109137. The cubic root of 747149 is about 90.7407587723.

The spelling of 747149 in words is "seven hundred forty-seven thousand, one hundred forty-nine".