139783400 has 48 divisors (see below), whose sum is σ = 328689900. Its totient is φ = 55278080.

The previous prime is 139783381. The next prime is 139783417. The reversal of 139783400 is 4387931.

It can be written as a sum of positive squares in 6 ways, for example, as 3407716 + 136375684 = 1846^2 + 11678^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 13874 + ... + 21726.

Almost surely, 2^139783400 is an apocalyptic number.

139783400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139783400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164344950).

139783400 is an abundant number, since it is smaller than the sum of its proper divisors (188906500).

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

139783400 is a wasteful number, since it uses less digits than its factorization.

139783400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958 (or 7949 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 139783400 is about 11823.0030026216. The cubic root of 139783400 is about 518.9814876274.

The spelling of 139783400 in words is "one hundred thirty-nine million, seven hundred eighty-three thousand, four hundred".