139481284 has 12 divisors (see below), whose sum is σ = 245731500. Its totient is φ = 69272288.

The previous prime is 139481281. The next prime is 139481291. The reversal of 139481284 is 482184931.

It can be written as a sum of positive squares in 2 ways, for example, as 16892100 + 122589184 = 4110^2 + 11072^2 .

It is not an unprimeable number, because it can be changed into a prime (139481281) 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, 116419 + ... + 117610.

It is an arithmetic number, because the mean of its divisors is an integer number (20477625).

Almost surely, 2^139481284 is an apocalyptic number.

It is an amenable number.

139481284 is a deficient number, since it is larger than the sum of its proper divisors (106250216).

139481284 is a wasteful number, since it uses less digits than its factorization.

139481284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234182 (or 234180 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 139481284 is about 11810.2194729819. The cubic root of 139481284 is about 518.6073237272.

The spelling of 139481284 in words is "one hundred thirty-nine million, four hundred eighty-one thousand, two hundred eighty-four".