39875920 has 80 divisors (see below), whose sum is σ = 109421568. Its totient is φ = 13224960.

The previous prime is 39875879. The next prime is 39875947. The reversal of 39875920 is 2957893.

39875920 = T₆₁ + T₆₂ + ... + T₆₂₀.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16212 + ... + 18508.

Almost surely, 2^39875920 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 39875920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54710784).

39875920 is an abundant number, since it is smaller than the sum of its proper divisors (69545648).

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

39875920 is a wasteful number, since it uses less digits than its factorization.

39875920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348 (or 2342 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 39875920 is about 6314.7383160350. The cubic root of 39875920 is about 341.6412000319.

The spelling of 39875920 in words is "thirty-nine million, eight hundred seventy-five thousand, nine hundred twenty".