3961380 has 48 divisors (see below), whose sum is σ = 11217024. Its totient is φ = 1044480.

The previous prime is 3961343. The next prime is 3961393. The reversal of 3961380 is 831693.

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

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, 5860 + ... + 6500.

It is an arithmetic number, because the mean of its divisors is an integer number (233688).

Almost surely, 2^3961380 is an apocalyptic number.

3961380 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 3961380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5608512).

3961380 is an abundant number, since it is smaller than the sum of its proper divisors (7255644).

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

3961380 is a wasteful number, since it uses less digits than its factorization.

3961380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 3961380 is about 1990.3215820565. The cubic root of 3961380 is about 158.2275735710.

It can be divided in two parts, 39613 and 80, that added together give a palindrome (39693).

The spelling of 3961380 in words is "three million, nine hundred sixty-one thousand, three hundred eighty".