2439631 has 4 divisors (see below), whose sum is σ = 2474064. Its totient is φ = 2405200.

The previous prime is 2439571. The next prime is 2439641. The reversal of 2439631 is 1369342.

2439631 = 54² + 55² + ... + 195².

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 2439631 - 2¹¹ = 2437583 is a prime.

It is a super-2 number, since 2×2439631² = 11903598832322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2439631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17110 + ... + 17251.

It is an arithmetic number, because the mean of its divisors is an integer number (618516).

2^2439631 is an apocalyptic number.

2439631 is a deficient number, since it is larger than the sum of its proper divisors (34433).

2439631 is an equidigital number, since it uses as much as digits as its factorization.

2439631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34432.

The product of its digits is 3888, while the sum is 28.

The square root of 2439631 is about 1561.9318166937. The cubic root of 2439631 is about 134.6195231130.

The spelling of 2439631 in words is "two million, four hundred thirty-nine thousand, six hundred thirty-one".