872139383 has 2 divisors, whose sum is σ = 872139384. Its totient is φ = 872139382.

The previous prime is 872139377. The next prime is 872139403. The reversal of 872139383 is 383931278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 872139383 - 2¹⁸ = 871877239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872139313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436069691 + 436069692.

It is an arithmetic number, because the mean of its divisors is an integer number (436069692).

Almost surely, 2^872139383 is an apocalyptic number.

872139383 is a deficient number, since it is larger than the sum of its proper divisors (1).

872139383 is an equidigital number, since it uses as much as digits as its factorization.

872139383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 872139383 is about 29532.0060781519. The cubic root of 872139383 is about 955.4221365949.

The spelling of 872139383 in words is "eight hundred seventy-two million, one hundred thirty-nine thousand, three hundred eighty-three".