39244621 has 8 divisors (see below), whose sum is σ = 42326424. Its totient is φ = 36171840.

The previous prime is 39244613. The next prime is 39244637. The reversal of 39244621 is 12644293.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2205225 + 37039396 = 1485^2 + 6086^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 39244621 - 2³ = 39244613 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 (39244691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8835 + ... + 12511.

It is an arithmetic number, because the mean of its divisors is an integer number (5290803).

Almost surely, 2^39244621 is an apocalyptic number.

It is an amenable number.

39244621 is a deficient number, since it is larger than the sum of its proper divisors (3081803).

39244621 is a wasteful number, since it uses less digits than its factorization.

39244621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511.

The product of its digits is 10368, while the sum is 31.

The square root of 39244621 is about 6264.5527374267. The cubic root of 39244621 is about 339.8286939803.

The spelling of 39244621 in words is "thirty-nine million, two hundred forty-four thousand, six hundred twenty-one".