385502899 has 2 divisors, whose sum is σ = 385502900. Its totient is φ = 385502898.

The previous prime is 385502861. The next prime is 385502903. The reversal of 385502899 is 998205583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 385502899 - 2¹¹ = 385500851 is a prime.

It is a super-2 number, since 2×385502899² = 297224970274808402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (385502809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192751449 + 192751450.

It is an arithmetic number, because the mean of its divisors is an integer number (192751450).

Almost surely, 2^385502899 is an apocalyptic number.

385502899 is a deficient number, since it is larger than the sum of its proper divisors (1).

385502899 is an equidigital number, since it uses as much as digits as its factorization.

385502899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 49.

The square root of 385502899 is about 19634.2277413704. The cubic root of 385502899 is about 727.7952488180.

The spelling of 385502899 in words is "three hundred eighty-five million, five hundred two thousand, eight hundred ninety-nine".