655394099 has 2 divisors, whose sum is σ = 655394100. Its totient is φ = 655394098.

The previous prime is 655394093. The next prime is 655394119. The reversal of 655394099 is 990493556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655394099 - 2⁴ = 655394083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (655394093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327697049 + 327697050.

It is an arithmetic number, because the mean of its divisors is an integer number (327697050).

Almost surely, 2^655394099 is an apocalyptic number.

655394099 is a deficient number, since it is larger than the sum of its proper divisors (1).

655394099 is an equidigital number, since it uses as much as digits as its factorization.

655394099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1312200, while the sum is 50.

The square root of 655394099 is about 25600.6659874309. The cubic root of 655394099 is about 868.6287019785.

The spelling of 655394099 in words is "six hundred fifty-five million, three hundred ninety-four thousand, ninety-nine".