1147371839 has 16 divisors (see below), whose sum is σ = 1189594560. Its totient is φ = 1105920000.

The previous prime is 1147371793. The next prime is 1147371847. The reversal of 1147371839 is 9381737411.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147371839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147371839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140371839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491647 + ... + 1492415.

It is an arithmetic number, because the mean of its divisors is an integer number (74349660).

Almost surely, 2^1147371839 is an apocalyptic number.

1147371839 is a deficient number, since it is larger than the sum of its proper divisors (42222721).

1147371839 is a wasteful number, since it uses less digits than its factorization.

1147371839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202.

The product of its digits is 127008, while the sum is 44.

The square root of 1147371839 is about 33872.8776309306. The cubic root of 1147371839 is about 1046.8908293845.

The spelling of 1147371839 in words is "one billion, one hundred forty-seven million, three hundred seventy-one thousand, eight hundred thirty-nine".