2439621 has 12 divisors (see below), whose sum is σ = 3547648. Its totient is φ = 1615464.

The previous prime is 2439571. The next prime is 2439641. The reversal of 2439621 is 1269342.

2439621 is a `hidden beast` number, since 2 + 4 + 39 + 621 = 666.

2439621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2439621 - 2¹⁴ = 2423237 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 4⁵ + 3¹³ + 9⁶ + 6⁷ + 2¹⁵ + 1 .

It is a Duffinian number.

2439621 is a lucky number.

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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 636 + ... + 2298.

2^2439621 is an apocalyptic number.

It is an amenable number.

2439621 is a deficient number, since it is larger than the sum of its proper divisors (1108027).

2439621 is a wasteful number, since it uses less digits than its factorization.

2439621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832 (or 1829 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 2439621 is about 1561.9286155263. The cubic root of 2439621 is about 134.6193391784.

The spelling of 2439621 in words is "two million, four hundred thirty-nine thousand, six hundred twenty-one".