220534399 has 2 divisors, whose sum is σ = 220534400. Its totient is φ = 220534398.

The previous prime is 220534397. The next prime is 220534423. The reversal of 220534399 is 993435022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220534399 - 2¹ = 220534397 is a prime.

It is a super-2 number, since 2×220534399² = 97270842284582402, which contains 22 as substring.

Together with 220534397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220534397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110267199 + 110267200.

It is an arithmetic number, because the mean of its divisors is an integer number (110267200).

Almost surely, 2^220534399 is an apocalyptic number.

220534399 is a deficient number, since it is larger than the sum of its proper divisors (1).

220534399 is an equidigital number, since it uses as much as digits as its factorization.

220534399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 220534399 is about 14850.4006343263. The cubic root of 220534399 is about 604.1694762570.

The spelling of 220534399 in words is "two hundred twenty million, five hundred thirty-four thousand, three hundred ninety-nine".