4390920 has 48 divisors (see below), whose sum is σ = 14271660. Its totient is φ = 1170816.

The previous prime is 4390909. The next prime is 4390921. The reversal of 4390920 is 290934.

It can be written as a sum of positive squares in 2 ways, for example, as 4384836 + 6084 = 2094^2 + 78^2 .

It is not an unprimeable number, because it can be changed into a prime (4390921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5739 + ... + 6458.

Almost surely, 2^4390920 is an apocalyptic number.

4390920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4390920 is an abundant number, since it is smaller than the sum of its proper divisors (9880740).

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

4390920 is a wasteful number, since it uses less digits than its factorization.

4390920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12214 (or 12207 counting only the distinct ones).

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

The square root of 4390920 is about 2095.4522184960. The cubic root of 4390920 is about 163.7514577498.

The spelling of 4390920 in words is "four million, three hundred ninety thousand, nine hundred twenty".