39004900 has 72 divisors (see below), whose sum is σ = 94056480. Its totient is φ = 13920000.

The previous prime is 39004897. The next prime is 39004909. The reversal of 39004900 is 940093.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (39004909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64600 + ... + 65200.

It is an arithmetic number, because the mean of its divisors is an integer number (1306340).

Almost surely, 2^39004900 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 39004900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47028240).

39004900 is an abundant number, since it is smaller than the sum of its proper divisors (55051580).

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

39004900 is a wasteful number, since it uses less digits than its factorization.

39004900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 39004900 is about 6245.3903000533. The cubic root of 39004900 is about 339.1353462161.

Adding to 39004900 its reverse (940093), we get a palindrome (39944993).

The spelling of 39004900 in words is "thirty-nine million, four thousand, nine hundred".