4399631 has 4 divisors (see below), whose sum is σ = 4501992. Its totient is φ = 4297272.

The previous prime is 4399627. The next prime is 4399639. The reversal of 4399631 is 1369934.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4399631 - 2² = 4399627 is a prime.

It is a super-2 number, since 2×4399631² = 38713505872322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4399591 and 4399600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4399639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51116 + ... + 51201.

It is an arithmetic number, because the mean of its divisors is an integer number (1125498).

Almost surely, 2^4399631 is an apocalyptic number.

4399631 is a deficient number, since it is larger than the sum of its proper divisors (102361).

4399631 is a wasteful number, since it uses less digits than its factorization.

4399631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102360.

The product of its digits is 17496, while the sum is 35.

The square root of 4399631 is about 2097.5297375723. The cubic root of 4399631 is about 163.8596732413.

The spelling of 4399631 in words is "four million, three hundred ninety-nine thousand, six hundred thirty-one".