3899340 has 120 divisors (see below), whose sum is σ = 12806640. Its totient is φ = 991872.

The previous prime is 3899339. The next prime is 3899347. The reversal of 3899340 is 439983.

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

It is a junction number, because it is equal to n+sod(n) for n = 3899295 and 3899304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899347) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 46939 + ... + 47021.

It is an arithmetic number, because the mean of its divisors is an integer number (106722).

Almost surely, 2^3899340 is an apocalyptic number.

3899340 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 3899340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6403320).

3899340 is an abundant number, since it is smaller than the sum of its proper divisors (8907300).

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

3899340 is a wasteful number, since it uses less digits than its factorization.

3899340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 122 counting only the distinct ones).

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

The square root of 3899340 is about 1974.6746567473. The cubic root of 3899340 is about 157.3972118442.

The spelling of 3899340 in words is "three million, eight hundred ninety-nine thousand, three hundred forty".