1439999131 has 2 divisors, whose sum is σ = 1439999132. Its totient is φ = 1439999130.

The previous prime is 1439999101. The next prime is 1439999137. The reversal of 1439999131 is 1319999341.

It is a strong prime.

It is an emirp because it is prime and its reverse (1319999341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1439999131 - 2⁷ = 1439999003 is a prime.

It is a super-2 number, since 2×1439999131² = 4147194994561510322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1439999137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719999565 + 719999566.

It is an arithmetic number, because the mean of its divisors is an integer number (719999566).

Almost surely, 2^1439999131 is an apocalyptic number.

1439999131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439999131 is an equidigital number, since it uses as much as digits as its factorization.

1439999131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236196, while the sum is 49.

The square root of 1439999131 is about 37947.3204719385. The cubic root of 1439999131 is about 1129.2430075015.

The spelling of 1439999131 in words is "one billion, four hundred thirty-nine million, nine hundred ninety-nine thousand, one hundred thirty-one".