3929040 has 160 divisors (see below), whose sum is σ = 14463360. Its totient is φ = 976896.

The previous prime is 3929027. The next prime is 3929047. The reversal of 3929040 is 409293.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 3928995 and 3929013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3929047) 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, 36667 + ... + 36773.

It is an arithmetic number, because the mean of its divisors is an integer number (90396).

Almost surely, 2^3929040 is an apocalyptic number.

3929040 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 3929040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7231680).

3929040 is an abundant number, since it is smaller than the sum of its proper divisors (10534320).

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

3929040 is a wasteful number, since it uses less digits than its factorization.

3929040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 3929040 is about 1982.1806174009. The cubic root of 3929040 is about 157.7958159338.

The spelling of 3929040 in words is "three million, nine hundred twenty-nine thousand, forty".