3919980 has 48 divisors (see below), whose sum is σ = 11128320. Its totient is φ = 1030848.

The previous prime is 3919973. The next prime is 3919999. The reversal of 3919980 is 899193.

3919980 = T₂₄₉ + T₂₅₀ + ... + T₃₃₈.

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, 4327 + ... + 5153.

It is an arithmetic number, because the mean of its divisors is an integer number (231840).

Almost surely, 2^3919980 is an apocalyptic number.

3919980 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 3919980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5564160).

3919980 is an abundant number, since it is smaller than the sum of its proper divisors (7208340).

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

3919980 is a wasteful number, since it uses less digits than its factorization.

3919980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 3919980 is about 1979.8939365532. The cubic root of 3919980 is about 157.6744351074.

The spelling of 3919980 in words is "three million, nine hundred nineteen thousand, nine hundred eighty".