947606749 has 4 divisors (see below), whose sum is σ = 947755836. Its totient is φ = 947457664.

The previous prime is 947606747. The next prime is 947606753.

947606749 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 327248100 + 620358649 = 18090^2 + 24907^2 .

It is a cyclic number.

It is not a de Polignac number, because 947606749 - 2¹ = 947606747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 947606696 and 947606705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947606747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64564 + ... + 77869.

It is an arithmetic number, because the mean of its divisors is an integer number (236938959).

Almost surely, 2^947606749 is an apocalyptic number.

It is an amenable number.

947606749 is a deficient number, since it is larger than the sum of its proper divisors (149087).

947606749 is a wasteful number, since it uses less digits than its factorization.

947606749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149086.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 947606749 is about 30783.2218749110. The cubic root of 947606749 is about 982.2213767062.

The spelling of 947606749 in words is "nine hundred forty-seven million, six hundred six thousand, seven hundred forty-nine".