39930480 has 120 divisors (see below), whose sum is σ = 138503040. Its totient is φ = 10298880.

The previous prime is 39930469. The next prime is 39930481. The reversal of 39930480 is 8403993.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39930481) 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, 21426 + ... + 23214.

It is an arithmetic number, because the mean of its divisors is an integer number (1154192).

Almost surely, 2^39930480 is an apocalyptic number.

39930480 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 39930480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69251520).

39930480 is an abundant number, since it is smaller than the sum of its proper divisors (98572560).

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

39930480 is a wasteful number, since it uses less digits than its factorization.

39930480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839 (or 1830 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 39930480 is about 6319.0568916572. The cubic root of 39930480 is about 341.7969452285.

Adding to 39930480 its sum of digits (36), we get a triangular number (39930516 = T₈₉₃₆).

The spelling of 39930480 in words is "thirty-nine million, nine hundred thirty thousand, four hundred eighty".