39001980 has 48 divisors (see below), whose sum is σ = 110283264. Its totient is φ = 10297920.

The previous prime is 39001943. The next prime is 39001981. The reversal of 39001980 is 8910093.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39001981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3025 + ... + 9335.

It is an arithmetic number, because the mean of its divisors is an integer number (2297568).

Almost surely, 2^39001980 is an apocalyptic number.

39001980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39001980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55141632).

39001980 is an abundant number, since it is smaller than the sum of its proper divisors (71281284).

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

39001980 is a wasteful number, since it uses less digits than its factorization.

39001980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426 (or 6424 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 39001980 is about 6245.1565232586. The cubic root of 39001980 is about 339.1268831775.

The spelling of 39001980 in words is "thirty-nine million, one thousand, nine hundred eighty".