1012139959 has 2 divisors, whose sum is σ = 1012139960. Its totient is φ = 1012139958.

The previous prime is 1012139941. The next prime is 1012139969. The reversal of 1012139959 is 9599312101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012139959 - 2⁷ = 1012139831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012139939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506069979 + 506069980.

It is an arithmetic number, because the mean of its divisors is an integer number (506069980).

Almost surely, 2^1012139959 is an apocalyptic number.

1012139959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012139959 is an equidigital number, since it uses as much as digits as its factorization.

1012139959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 1012139959 is about 31814.1471518568. The cubic root of 1012139959 is about 1004.0303871561.

The spelling of 1012139959 in words is "one billion, twelve million, one hundred thirty-nine thousand, nine hundred fifty-nine".