1147879939 has 2 divisors, whose sum is σ = 1147879940. Its totient is φ = 1147879938.

The previous prime is 1147879921. The next prime is 1147879961. The reversal of 1147879939 is 9399787411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1147879939 - 2⁵ = 1147879907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1147873939) 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 as a sum of consecutive naturals, namely, 573939969 + 573939970.

It is an arithmetic number, because the mean of its divisors is an integer number (573939970).

Almost surely, 2^1147879939 is an apocalyptic number.

1147879939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147879939 is an equidigital number, since it uses as much as digits as its factorization.

1147879939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 58.

The square root of 1147879939 is about 33880.3769016816. The cubic root of 1147879939 is about 1047.0453409714.

The spelling of 1147879939 in words is "one billion, one hundred forty-seven million, eight hundred seventy-nine thousand, nine hundred thirty-nine".