139493736 has 48 divisors (see below), whose sum is σ = 378982500. Its totient is φ = 46351872.

The previous prime is 139493699. The next prime is 139493743. The reversal of 139493736 is 637394931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 113422500 + 26071236 = 10650^2 + 5106^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139493691 and 139493700.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21390 + ... + 27138.

Almost surely, 2^139493736 is an apocalyptic number.

It is an amenable number.

139493736 is an abundant number, since it is smaller than the sum of its proper divisors (239488764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139493736 is a wasteful number, since it uses less digits than its factorization.

139493736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6098 (or 6091 counting only the distinct ones).

The product of its digits is 367416, while the sum is 45.

The square root of 139493736 is about 11810.7466317757. The cubic root of 139493736 is about 518.6227559201.

The spelling of 139493736 in words is "one hundred thirty-nine million, four hundred ninety-three thousand, seven hundred thirty-six".