139289976 has 128 divisors (see below), whose sum is σ = 468288000. Its totient is φ = 37449216.

The previous prime is 139289971. The next prime is 139289977. The reversal of 139289976 is 679982931.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139289971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22995 + ... + 28413.

It is an arithmetic number, because the mean of its divisors is an integer number (3658500).

Almost surely, 2^139289976 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 139289976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234144000).

139289976 is an abundant number, since it is smaller than the sum of its proper divisors (328998024).

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

139289976 is a wasteful number, since it uses less digits than its factorization.

139289976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5458 (or 5448 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 139289976 is about 11802.1174371381. The cubic root of 139289976 is about 518.3701135891.

The spelling of 139289976 in words is "one hundred thirty-nine million, two hundred eighty-nine thousand, nine hundred seventy-six".