139794489 has 12 divisors (see below), whose sum is σ = 204692436. Its totient is φ = 91919232.

The previous prime is 139794439. The next prime is 139794509. The reversal of 139794489 is 984497931.

It can be written as a sum of positive squares in 2 ways, for example, as 119246400 + 20548089 = 10920^2 + 4533^2 .

It is not a de Polignac number, because 139794489 - 2⁸ = 139794233 is a prime.

It is a super-2 number, since 2×139794489² = 39084998309542242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139794439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105732 + ... + 107045.

It is an arithmetic number, because the mean of its divisors is an integer number (17057703).

Almost surely, 2^139794489 is an apocalyptic number.

It is an amenable number.

139794489 is a deficient number, since it is larger than the sum of its proper divisors (64897947).

139794489 is a wasteful number, since it uses less digits than its factorization.

139794489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212856 (or 212853 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 139794489 is about 11823.4719520114. The cubic root of 139794489 is about 518.9952108438.

The spelling of 139794489 in words is "one hundred thirty-nine million, seven hundred ninety-four thousand, four hundred eighty-nine".