39139140 has 24 divisors (see below), whose sum is σ = 109589760. Its totient is φ = 10437088.

The previous prime is 39139129. The next prime is 39139141. The reversal of 39139140 is 4193193.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 39139098 and 39139107.

It is not an unprimeable number, because it can be changed into a prime (39139141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326100 + ... + 326219.

It is an arithmetic number, because the mean of its divisors is an integer number (4566240).

Almost surely, 2^39139140 is an apocalyptic number.

39139140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39139140 is an abundant number, since it is smaller than the sum of its proper divisors (70450620).

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

39139140 is a wasteful number, since it uses less digits than its factorization.

39139140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652331 (or 652329 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 39139140 is about 6256.1281956175. The cubic root of 39139140 is about 339.5239589403.

The spelling of 39139140 in words is "thirty-nine million, one hundred thirty-nine thousand, one hundred forty".