139092539 has 8 divisors (see below), whose sum is σ = 141080160. Its totient is φ = 137117376.

The previous prime is 139092533. The next prime is 139092553. The reversal of 139092539 is 935290931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139092539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139092496 and 139092505.

It is not an unprimeable number, because it can be changed into a prime (139092533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20639 + ... + 26535.

It is an arithmetic number, because the mean of its divisors is an integer number (17635020).

Almost surely, 2^139092539 is an apocalyptic number.

139092539 is a deficient number, since it is larger than the sum of its proper divisors (1987621).

139092539 is a wasteful number, since it uses less digits than its factorization.

139092539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6229.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 139092539 is about 11793.7499973503. The cubic root of 139092539 is about 518.1250760117.

The spelling of 139092539 in words is "one hundred thirty-nine million, ninety-two thousand, five hundred thirty-nine".