947013149 has 4 divisors (see below), whose sum is σ = 947520636. Its totient is φ = 946505664.

The previous prime is 947013139. The next prime is 947013163. The reversal of 947013149 is 941310749.

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 36060025 + 910953124 = 6005^2 + 30182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947013149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947013139) 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, 250934 + ... + 254679.

It is an arithmetic number, because the mean of its divisors is an integer number (236880159).

Almost surely, 2^947013149 is an apocalyptic number.

It is an amenable number.

947013149 is a deficient number, since it is larger than the sum of its proper divisors (507487).

947013149 is a wasteful number, since it uses less digits than its factorization.

947013149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507486.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 947013149 is about 30773.5787486604. The cubic root of 947013149 is about 982.0162394323.

The spelling of 947013149 in words is "nine hundred forty-seven million, thirteen thousand, one hundred forty-nine".