38620399 has 2 divisors, whose sum is σ = 38620400. Its totient is φ = 38620398.

The previous prime is 38620363. The next prime is 38620403. The reversal of 38620399 is 99302683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38620399 - 2⁷ = 38620271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38620499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19310199 + 19310200.

It is an arithmetic number, because the mean of its divisors is an integer number (19310200).

Almost surely, 2^38620399 is an apocalyptic number.

38620399 is a deficient number, since it is larger than the sum of its proper divisors (1).

38620399 is an equidigital number, since it uses as much as digits as its factorization.

38620399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 38620399 is about 6214.5312775784. The cubic root of 38620399 is about 338.0172925107.

The spelling of 38620399 in words is "thirty-eight million, six hundred twenty thousand, three hundred ninety-nine".