4099312 has 40 divisors (see below), whose sum is σ = 9615456. Its totient is φ = 1652736.

The previous prime is 4099309. The next prime is 4099321. The reversal of 4099312 is 2139904.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

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, 828 + ... + 2980.

Almost surely, 2^4099312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4099312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4807728).

4099312 is an abundant number, since it is smaller than the sum of its proper divisors (5516144).

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

4099312 is a wasteful number, since it uses less digits than its factorization.

4099312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185 (or 2179 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 4099312 is about 2024.6757765134. The cubic root of 4099312 is about 160.0431133817.

The spelling of 4099312 in words is "four million, ninety-nine thousand, three hundred twelve".