139088 has 10 divisors (see below), whose sum is σ = 269514. Its totient is φ = 69536.

The previous prime is 139079. The next prime is 139091. The reversal of 139088 is 880931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 85264 + 53824 = 292^2 + 232^2 .

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 139088.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139088.

It is an unprimeable number.

139088 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4331 + ... + 4362.

2¹³⁹⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

139088 is a deficient number, since it is larger than the sum of its proper divisors (130426).

139088 is an equidigital number, since it uses as much as digits as its factorization.

139088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8701 (or 8695 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 139088 is about 372.9450361648. The cubic root of 139088 is about 51.8119439967.

The spelling of 139088 in words is "one hundred thirty-nine thousand, eighty-eight".