4423920 has 40 divisors (see below), whose sum is σ = 13714896. Its totient is φ = 1179648.

The previous prime is 4423919. The next prime is 4423931. The reversal of 4423920 is 293244.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8977 + ... + 9456.

Almost surely, 2^4423920 is an apocalyptic number.

4423920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4423920 is an abundant number, since it is smaller than the sum of its proper divisors (9290976).

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

4423920 is a wasteful number, since it uses less digits than its factorization.

4423920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18449 (or 18443 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 4423920 is about 2103.3116744791. The cubic root of 4423920 is about 164.1606595355.

The spelling of 4423920 in words is "four million, four hundred twenty-three thousand, nine hundred twenty".