139144336 has 10 divisors (see below), whose sum is σ = 269592182. Its totient is φ = 69572160.

The previous prime is 139144333. The next prime is 139144339. The reversal of 139144336 is 633441931.

It is an interprime number because it is at equal distance from previous prime (139144333) and next prime (139144339).

It can be written as a sum of positive squares in only one way, i.e., 103144336 + 36000000 = 10156^2 + 6000^2 .

It is a super-2 number, since 2×139144336² = 38722292481761792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139144331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4348245 + ... + 4348276.

Almost surely, 2^139144336 is an apocalyptic number.

139144336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139144336 is a deficient number, since it is larger than the sum of its proper divisors (130447846).

139144336 is an equidigital number, since it uses as much as digits as its factorization.

139144336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8696529 (or 8696523 counting only the distinct ones).

The product of its digits is 23328, while the sum is 34.

The square root of 139144336 is about 11795.9457441953. The cubic root of 139144336 is about 518.1893833045.

The spelling of 139144336 in words is "one hundred thirty-nine million, one hundred forty-four thousand, three hundred thirty-six".