39149140 has 24 divisors (see below), whose sum is σ = 82375272. Its totient is φ = 15628800.

The previous prime is 39149107. The next prime is 39149141. The reversal of 39149140 is 4194193.

39149140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16548624 + 22600516 = 4068^2 + 4754^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39149141) 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 7 ways as a sum of consecutive naturals, for example, 10392 + ... + 13648.

It is an arithmetic number, because the mean of its divisors is an integer number (3432303).

Almost surely, 2^39149140 is an apocalyptic number.

It is an amenable number.

39149140 is an abundant number, since it is smaller than the sum of its proper divisors (43226132).

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

39149140 is a wasteful number, since it uses less digits than its factorization.

39149140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867 (or 3865 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 39149140 is about 6256.9273609336. The cubic root of 39149140 is about 339.5528724564.

The spelling of 39149140 in words is "thirty-nine million, one hundred forty-nine thousand, one hundred forty".