1139238747 has 24 divisors (see below), whose sum is σ = 1700594688. Its totient is φ = 734151600.

The previous prime is 1139238739. The next prime is 1139238761. The reversal of 1139238747 is 7478329311.

It is not a de Polignac number, because 1139238747 - 2³ = 1139238739 is a prime.

It is a super-2 number, since 2×1139238747² = 2595729845332260018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1139238647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322722 + ... + 326232.

It is an arithmetic number, because the mean of its divisors is an integer number (70858112).

Almost surely, 2^1139238747 is an apocalyptic number.

1139238747 is a deficient number, since it is larger than the sum of its proper divisors (561355941).

1139238747 is a wasteful number, since it uses less digits than its factorization.

1139238747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711 (or 4708 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 1139238747 is about 33752.6109656720. The cubic root of 1139238747 is about 1044.4113492200.

The spelling of 1139238747 in words is "one billion, one hundred thirty-nine million, two hundred thirty-eight thousand, seven hundred forty-seven".