139545400 has 24 divisors (see below), whose sum is σ = 324443520. Its totient is φ = 55818080.

The previous prime is 139545349. The next prime is 139545403. The reversal of 139545400 is 4545931.

139545400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139545400² = 38945837322320000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139545403) 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 5 ways as a sum of consecutive naturals, for example, 348664 + ... + 349063.

It is an arithmetic number, because the mean of its divisors is an integer number (13518480).

Almost surely, 2^139545400 is an apocalyptic number.

139545400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139545400 is an abundant number, since it is smaller than the sum of its proper divisors (184898120).

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

139545400 is a wasteful number, since it uses less digits than its factorization.

139545400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697743 (or 697734 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 139545400 is about 11812.9335899259. The cubic root of 139545400 is about 518.6867750883.

The spelling of 139545400 in words is "one hundred thirty-nine million, five hundred forty-five thousand, four hundred".