39636090 has 96 divisors (see below), whose sum is σ = 116887680. Its totient is φ = 9237888.

The previous prime is 39636089. The next prime is 39636097. The reversal of 39636090 is 9063693.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39636097) 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, 21339 + ... + 23121.

It is an arithmetic number, because the mean of its divisors is an integer number (1217580).

Almost surely, 2^39636090 is an apocalyptic number.

39636090 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 39636090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58443840).

39636090 is an abundant number, since it is smaller than the sum of its proper divisors (77251590).

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

39636090 is a wasteful number, since it uses less digits than its factorization.

39636090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828 (or 1825 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 39636090 is about 6295.7199747130. The cubic root of 39636090 is about 340.9548992505.

The spelling of 39636090 in words is "thirty-nine million, six hundred thirty-six thousand, ninety".