139489337 has 4 divisors (see below), whose sum is σ = 150219300. Its totient is φ = 128759376.

The previous prime is 139489331. The next prime is 139489379. The reversal of 139489337 is 733984931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 733984931 = 43 ⋅17069417.

It can be written as a sum of positive squares in 2 ways, for example, as 54922921 + 84566416 = 7411^2 + 9196^2 .

It is a cyclic number.

It is not a de Polignac number, because 139489337 - 2⁸ = 139489081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139489291 and 139489300.

It is not an unprimeable number, because it can be changed into a prime (139489331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5364962 + ... + 5364987.

It is an arithmetic number, because the mean of its divisors is an integer number (37554825).

Almost surely, 2^139489337 is an apocalyptic number.

It is an amenable number.

139489337 is a deficient number, since it is larger than the sum of its proper divisors (10729963).

139489337 is a wasteful number, since it uses less digits than its factorization.

139489337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10729962.

The product of its digits is 489888, while the sum is 47.

The square root of 139489337 is about 11810.5604016067. The cubic root of 139489337 is about 518.6173041927.

The spelling of 139489337 in words is "one hundred thirty-nine million, four hundred eighty-nine thousand, three hundred thirty-seven".