387041639 has 2 divisors, whose sum is σ = 387041640. Its totient is φ = 387041638.

The previous prime is 387041579. The next prime is 387041651. The reversal of 387041639 is 936140783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 387041639 - 2⁸ = 387041383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 387041596 and 387041605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387041689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193520819 + 193520820.

It is an arithmetic number, because the mean of its divisors is an integer number (193520820).

Almost surely, 2^387041639 is an apocalyptic number.

387041639 is a deficient number, since it is larger than the sum of its proper divisors (1).

387041639 is an equidigital number, since it uses as much as digits as its factorization.

387041639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 387041639 is about 19673.3738591021. The cubic root of 387041639 is about 728.7622981310.

The spelling of 387041639 in words is "three hundred eighty-seven million, forty-one thousand, six hundred thirty-nine".