62639939 has 2 divisors, whose sum is σ = 62639940. Its totient is φ = 62639938.

The previous prime is 62639921. The next prime is 62639947. The reversal of 62639939 is 93993626.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 62639939 - 2¹⁶ = 62574403 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 62639893 and 62639902.

It is not a weakly prime, because it can be changed into another prime (62639989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31319969 + 31319970.

It is an arithmetic number, because the mean of its divisors is an integer number (31319970).

Almost surely, 2^62639939 is an apocalyptic number.

62639939 is a deficient number, since it is larger than the sum of its proper divisors (1).

62639939 is an equidigital number, since it uses as much as digits as its factorization.

62639939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 47.

The square root of 62639939 is about 7914.5397212978. The cubic root of 62639939 is about 397.1462279654.

The spelling of 62639939 in words is "sixty-two million, six hundred thirty-nine thousand, nine hundred thirty-nine".