39621061 has 4 divisors (see below), whose sum is σ = 41706400. Its totient is φ = 37535724.

The previous prime is 39621011. The next prime is 39621083. The reversal of 39621061 is 16012693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39621061 - 2¹⁵ = 39588293 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 (39621011) 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, 1042641 + ... + 1042678.

It is an arithmetic number, because the mean of its divisors is an integer number (10426600).

Almost surely, 2^39621061 is an apocalyptic number.

It is an amenable number.

39621061 is a deficient number, since it is larger than the sum of its proper divisors (2085339).

39621061 is a wasteful number, since it uses less digits than its factorization.

39621061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085338.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 39621061 is about 6294.5262728819. The cubic root of 39621061 is about 340.9117999860.

The spelling of 39621061 in words is "thirty-nine million, six hundred twenty-one thousand, sixty-one".