3929472 has 80 divisors (see below), whose sum is σ = 11724900. Its totient is φ = 1306368.

The previous prime is 3929461. The next prime is 3929477. The reversal of 3929472 is 2749293.

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

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3929477) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10179 + ... + 10557.

Almost surely, 2^3929472 is an apocalyptic number.

3929472 is a gapful number since it is divisible by the number (32) 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 3929472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5862450).

3929472 is an abundant number, since it is smaller than the sum of its proper divisors (7795428).

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

3929472 is an equidigital number, since it uses as much as digits as its factorization.

3929472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 384 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 3929472 is about 1982.2895853028. The cubic root of 3929472 is about 157.8015989660.

The spelling of 3929472 in words is "three million, nine hundred twenty-nine thousand, four hundred seventy-two".