139733916 has 48 divisors (see below), whose sum is σ = 376830720. Its totient is φ = 39473280.

The previous prime is 139733911. The next prime is 139733921. The reversal of 139733916 is 619337931.

It is an interprime number because it is at equal distance from previous prime (139733911) and next prime (139733921).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139733911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1870 + ... + 16821.

It is an arithmetic number, because the mean of its divisors is an integer number (7850640).

Almost surely, 2^139733916 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 139733916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188415360).

139733916 is an abundant number, since it is smaller than the sum of its proper divisors (237096804).

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

139733916 is a wasteful number, since it uses less digits than its factorization.

139733916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18794 (or 18792 counting only the distinct ones).

The product of its digits is 91854, while the sum is 42.

The square root of 139733916 is about 11820.9101172456. The cubic root of 139733916 is about 518.9202397468.

The spelling of 139733916 in words is "one hundred thirty-nine million, seven hundred thirty-three thousand, nine hundred sixteen".