139898040 has 64 divisors (see below), whose sum is σ = 433244160. Its totient is φ = 36101760.

The previous prime is 139898039. The next prime is 139898047. The reversal of 139898040 is 40898931.

It is a junction number, because it is equal to n+sod(n) for n = 139897983 and 139898001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139898047) 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 15 ways as a sum of consecutive naturals, for example, 15084 + ... + 22523.

It is an arithmetic number, because the mean of its divisors is an integer number (6769440).

Almost surely, 2^139898040 is an apocalyptic number.

139898040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139898040 is an abundant number, since it is smaller than the sum of its proper divisors (293346120).

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

139898040 is a wasteful number, since it uses less digits than its factorization.

139898040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37652 (or 37648 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 139898040 is about 11827.8501850505. The cubic root of 139898040 is about 519.1233255958.

The spelling of 139898040 in words is "one hundred thirty-nine million, eight hundred ninety-eight thousand, forty".