139863436 has 6 divisors (see below), whose sum is σ = 244761020. Its totient is φ = 69931716.

The previous prime is 139863421. The next prime is 139863439. The reversal of 139863436 is 634368931.

It is a junction number, because it is equal to n+sod(n) for n = 139863392 and 139863401.

It is not an unprimeable number, because it can be changed into a prime (139863439) 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 as a sum of consecutive naturals, namely, 17482926 + ... + 17482933.

Almost surely, 2^139863436 is an apocalyptic number.

It is an amenable number.

139863436 is a deficient number, since it is larger than the sum of its proper divisors (104897584).

139863436 is a wasteful number, since it uses less digits than its factorization.

139863436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34965863 (or 34965861 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 139863436 is about 11826.3872759182. The cubic root of 139863436 is about 519.0805200761.

The spelling of 139863436 in words is "one hundred thirty-nine million, eight hundred sixty-three thousand, four hundred thirty-six".