38632639 has 2 divisors, whose sum is σ = 38632640. Its totient is φ = 38632638.

The previous prime is 38632631. The next prime is 38632661. The reversal of 38632639 is 93623683.

It is a weak prime.

It is an emirp because it is prime and its reverse (93623683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38632639 - 2³ = 38632631 is a prime.

It is a super-2 number, since 2×38632639² = 2984961592208642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38632631) 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, 19316319 + 19316320.

It is an arithmetic number, because the mean of its divisors is an integer number (19316320).

Almost surely, 2^38632639 is an apocalyptic number.

38632639 is a deficient number, since it is larger than the sum of its proper divisors (1).

38632639 is an equidigital number, since it uses as much as digits as its factorization.

38632639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 40.

The square root of 38632639 is about 6215.5159882346. The cubic root of 38632639 is about 338.0529981202.

The spelling of 38632639 in words is "thirty-eight million, six hundred thirty-two thousand, six hundred thirty-nine".