2939621 has 8 divisors (see below), whose sum is σ = 3003000. Its totient is φ = 2877120.

The previous prime is 2939597. The next prime is 2939633. The reversal of 2939621 is 1269392.

It can be written as a sum of positive squares in 4 ways, for example, as 12100 + 2927521 = 110^2 + 1711^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2939621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2939641) 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 7 ways as a sum of consecutive naturals, for example, 16151 + ... + 16331.

It is an arithmetic number, because the mean of its divisors is an integer number (375375).

2^2939621 is an apocalyptic number.

It is an amenable number.

2939621 is a deficient number, since it is larger than the sum of its proper divisors (63379).

2939621 is a wasteful number, since it uses less digits than its factorization.

2939621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439.

The product of its digits is 5832, while the sum is 32.

The square root of 2939621 is about 1714.5322977419. The cubic root of 2939621 is about 143.2508190417.

The spelling of 2939621 in words is "two million, nine hundred thirty-nine thousand, six hundred twenty-one".