1239047870 has 16 divisors (see below), whose sum is σ = 2231152560. Its totient is φ = 495426624.

The previous prime is 1239047867. The next prime is 1239047879. The reversal of 1239047870 is 787409321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239047879) 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 7 ways as a sum of consecutive naturals, for example, 4589 + ... + 49991.

It is an arithmetic number, because the mean of its divisors is an integer number (139447035).

Almost surely, 2^1239047870 is an apocalyptic number.

1239047870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1239047870 is a deficient number, since it is larger than the sum of its proper divisors (992104690).

1239047870 is a wasteful number, since it uses less digits than its factorization.

1239047870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48139.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1239047870 is about 35200.1117895952. Note that the first 3 decimals coincide. The cubic root of 1239047870 is about 1074.0620251611.

The spelling of 1239047870 in words is "one billion, two hundred thirty-nine million, forty-seven thousand, eight hundred seventy".