39379920 has 160 divisors (see below), whose sum is σ = 129515520. Its totient is φ = 9884160.

The previous prime is 39379867. The next prime is 39379927. The reversal of 39379920 is 2997393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39379927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498441 + ... + 498519.

It is an arithmetic number, because the mean of its divisors is an integer number (809472).

Almost surely, 2^39379920 is an apocalyptic number.

39379920 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 39379920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64757760).

39379920 is an abundant number, since it is smaller than the sum of its proper divisors (90135600).

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

39379920 is a wasteful number, since it uses less digits than its factorization.

39379920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 42.

The square root of 39379920 is about 6275.3422217438. The cubic root of 39379920 is about 340.2187749994.

The spelling of 39379920 in words is "thirty-nine million, three hundred seventy-nine thousand, nine hundred twenty".