39620137 has 2 divisors, whose sum is σ = 39620138. Its totient is φ = 39620136.

The previous prime is 39620123. The next prime is 39620153. The reversal of 39620137 is 73102693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25512601 + 14107536 = 5051^2 + 3756^2 .

It is an emirp because it is prime and its reverse (73102693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39620137 - 2¹⁵ = 39587369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39620099 and 39620108.

It is not a weakly prime, because it can be changed into another prime (39620117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19810068 + 19810069.

It is an arithmetic number, because the mean of its divisors is an integer number (19810069).

Almost surely, 2^39620137 is an apocalyptic number.

It is an amenable number.

39620137 is a deficient number, since it is larger than the sum of its proper divisors (1).

39620137 is an equidigital number, since it uses as much as digits as its factorization.

39620137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 39620137 is about 6294.4528753499. The cubic root of 39620137 is about 340.9091498386.

The spelling of 39620137 in words is "thirty-nine million, six hundred twenty thousand, one hundred thirty-seven".