139226544 has 120 divisors (see below), whose sum is σ = 411021312. Its totient is φ = 43908480.

The previous prime is 139226539. The next prime is 139226551. The reversal of 139226544 is 445622931.

It is a happy number.

139226544 is a `hidden beast` number, since 1 + 3 + 92 + 26 + 544 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 139226499 and 139226508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420459 + ... + 420789.

Almost surely, 2^139226544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139226544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205510656).

139226544 is an abundant number, since it is smaller than the sum of its proper divisors (271794768).

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

139226544 is a wasteful number, since it uses less digits than its factorization.

139226544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 486 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 139226544 is about 11799.4298167327. The cubic root of 139226544 is about 518.2914138708.

The spelling of 139226544 in words is "one hundred thirty-nine million, two hundred twenty-six thousand, five hundred forty-four".