39620047 has 4 divisors (see below), whose sum is σ = 41950656. Its totient is φ = 37289440.

The previous prime is 39620027. The next prime is 39620057. The reversal of 39620047 is 74002693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74002693 = 29 ⋅2551817.

It is a cyclic number.

It is not a de Polignac number, because 39620047 - 2¹¹ = 39617999 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39620017) 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, 1165279 + ... + 1165312.

It is an arithmetic number, because the mean of its divisors is an integer number (10487664).

Almost surely, 2^39620047 is an apocalyptic number.

39620047 is a deficient number, since it is larger than the sum of its proper divisors (2330609).

39620047 is a wasteful number, since it uses less digits than its factorization.

39620047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330608.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 39620047 is about 6294.4457261938. The cubic root of 39620047 is about 340.9088917052.

The spelling of 39620047 in words is "thirty-nine million, six hundred twenty thousand, forty-seven".