39039390 has 96 divisors (see below), whose sum is σ = 111305376. Its totient is φ = 9434880.

The previous prime is 39039379. The next prime is 39039397. The reversal of 39039390 is 9393093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39039397) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71097 + ... + 71643.

It is an arithmetic number, because the mean of its divisors is an integer number (1159431).

Almost surely, 2^39039390 is an apocalyptic number.

39039390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 39039390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55652688).

39039390 is an abundant number, since it is smaller than the sum of its proper divisors (72265986).

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

39039390 is a wasteful number, since it uses less digits than its factorization.

39039390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 19683, while the sum is 36.

The square root of 39039390 is about 6248.1509264742. The cubic root of 39039390 is about 339.2352766707.

The spelling of 39039390 in words is "thirty-nine million, thirty-nine thousand, three hundred ninety".