139772388 has 48 divisors (see below), whose sum is σ = 376233984. Its totient is φ = 39559200.

The previous prime is 139772383. The next prime is 139772389. The reversal of 139772388 is 883277931.

It is not an unprimeable number, because it can be changed into a prime (139772383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1213 + ... + 16763.

It is an arithmetic number, because the mean of its divisors is an integer number (7838208).

Almost surely, 2^139772388 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 139772388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188116992).

139772388 is an abundant number, since it is smaller than the sum of its proper divisors (236461596).

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

139772388 is a wasteful number, since it uses less digits than its factorization.

139772388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15672 (or 15670 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 139772388 is about 11822.5372911233. The cubic root of 139772388 is about 518.9678589843.

The spelling of 139772388 in words is "one hundred thirty-nine million, seven hundred seventy-two thousand, three hundred eighty-eight".