387454979 has 2 divisors, whose sum is σ = 387454980. Its totient is φ = 387454978.

The previous prime is 387454967. The next prime is 387455021. The reversal of 387454979 is 979454783.

It is a weak prime.

It is an emirp because it is prime and its reverse (979454783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387454979 - 2²⁰ = 386406403 is a prime.

It is not a weakly prime, because it can be changed into another prime (387454279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193727489 + 193727490.

It is an arithmetic number, because the mean of its divisors is an integer number (193727490).

Almost surely, 2^387454979 is an apocalyptic number.

387454979 is a deficient number, since it is larger than the sum of its proper divisors (1).

387454979 is an equidigital number, since it uses as much as digits as its factorization.

387454979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The square root of 387454979 is about 19683.8761172692. The cubic root of 387454979 is about 729.0216323647.

The spelling of 387454979 in words is "three hundred eighty-seven million, four hundred fifty-four thousand, nine hundred seventy-nine".