139948900 has 135 divisors (see below), whose sum is σ = 382709229. Its totient is φ = 44291520.

The previous prime is 139948871. The next prime is 139948901. The reversal of 139948900 is 9849931.

The square root of 139948900 is 11830.

It is a perfect power (a square), and thus also a powerful number.

139948900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 7 ways, for example, as 137311524 + 2637376 = 11718^2 + 1624^2 .

It is a super-2 number, since 2×139948900² = 39171389222420000, which contains 22 as substring.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (139948901) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 10765294 + ... + 10765306.

Almost surely, 2^139948900 is an apocalyptic number.

139948900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139948900 is the 11830-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139948900

139948900 is an abundant number, since it is smaller than the sum of its proper divisors (242760329).

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

139948900 is an equidigital number, since it uses as much as digits as its factorization.

139948900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The cubic root of 139948900 is about 519.1862271523.

The spelling of 139948900 in words is "one hundred thirty-nine million, nine hundred forty-eight thousand, nine hundred".