969147939 has 4 divisors (see below), whose sum is σ = 1292197256. Its totient is φ = 646098624.

The previous prime is 969147913. The next prime is 969147973. The reversal of 969147939 is 939741969.

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

It is not a de Polignac number, because 969147939 - 2¹³ = 969139747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (969147979) 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, 161524654 + ... + 161524659.

It is an arithmetic number, because the mean of its divisors is an integer number (323049314).

Almost surely, 2^969147939 is an apocalyptic number.

969147939 is a deficient number, since it is larger than the sum of its proper divisors (323049317).

969147939 is a wasteful number, since it uses less digits than its factorization.

969147939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323049316.

The product of its digits is 3306744, while the sum is 57.

The square root of 969147939 is about 31131.1409845511. The cubic root of 969147939 is about 989.6083676951.

It can be divided in two parts, 9691 and 47939, that added together give a triangular number (57630 = T₃₃₉).

The spelling of 969147939 in words is "nine hundred sixty-nine million, one hundred forty-seven thousand, nine hundred thirty-nine".