139508484 has 24 divisors (see below), whose sum is σ = 328086528. Its totient is φ = 46136160.

The previous prime is 139508471. The next prime is 139508489. The reversal of 139508484 is 484805931.

It is not an unprimeable number, because it can be changed into a prime (139508489) 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, 44247 + ... + 47294.

It is an arithmetic number, because the mean of its divisors is an integer number (13670272).

Almost surely, 2^139508484 is an apocalyptic number.

It is an amenable number.

139508484 is an abundant number, since it is smaller than the sum of its proper divisors (188578044).

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

139508484 is a wasteful number, since it uses less digits than its factorization.

139508484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91675 (or 91673 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 139508484 is about 11811.3709619163. The cubic root of 139508484 is about 518.6410324370.

The spelling of 139508484 in words is "one hundred thirty-nine million, five hundred eight thousand, four hundred eighty-four".