386261999 has 2 divisors, whose sum is σ = 386262000. Its totient is φ = 386261998.

The previous prime is 386261989. The next prime is 386262007. The reversal of 386261999 is 999162683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 386261999 - 2⁴ = 386261983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 386261999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386261929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193130999 + 193131000.

It is an arithmetic number, because the mean of its divisors is an integer number (193131000).

Almost surely, 2^386261999 is an apocalyptic number.

386261999 is a deficient number, since it is larger than the sum of its proper divisors (1).

386261999 is an equidigital number, since it uses as much as digits as its factorization.

386261999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 53.

The square root of 386261999 is about 19653.5492723325. The cubic root of 386261999 is about 728.2726400780.

The spelling of 386261999 in words is "three hundred eighty-six million, two hundred sixty-one thousand, nine hundred ninety-nine".