1439136297 has 6 divisors (see below), whose sum is σ = 2078752442. Its totient is φ = 959424192.

The previous prime is 1439136269. The next prime is 1439136299. The reversal of 1439136297 is 7926319341.

1439136297 is a `hidden beast` number, since 1 + 4 + 3 + 9 + 13 + 629 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1335829401 + 103306896 = 36549^2 + 10164^2 .

It is not a de Polignac number, because 1439136297 - 2¹⁶ = 1439070761 is a prime.

It is a super-2 number, since 2×1439136297² = 4142226562685744418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1439136299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79952008 + ... + 79952025.

Almost surely, 2^1439136297 is an apocalyptic number.

It is an amenable number.

1439136297 is a deficient number, since it is larger than the sum of its proper divisors (639616145).

1439136297 is a wasteful number, since it uses less digits than its factorization.

1439136297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159904039 (or 159904036 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 1439136297 is about 37935.9499287945. The cubic root of 1439136297 is about 1129.0174184920.

The spelling of 1439136297 in words is "one billion, four hundred thirty-nine million, one hundred thirty-six thousand, two hundred ninety-seven".