220854397 has 6 divisors (see below), whose sum is σ = 222623358. Its totient is φ = 219099384.

The previous prime is 220854391. The next prime is 220854427. The reversal of 220854397 is 793458022.

It can be written as a sum of positive squares in only one way, i.e., 220789881 + 64516 = 14859^2 + 254^2 .

It is not a de Polignac number, because 220854397 - 2¹¹ = 220852349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220854391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9283 + ... + 22975.

It is an arithmetic number, because the mean of its divisors is an integer number (37103893).

Almost surely, 2^220854397 is an apocalyptic number.

It is an amenable number.

220854397 is a deficient number, since it is larger than the sum of its proper divisors (1768961).

220854397 is an equidigital number, since it uses as much as digits as its factorization.

220854397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13947 (or 13820 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 220854397 is about 14861.1707816040. The cubic root of 220854397 is about 604.4615540322.

The spelling of 220854397 in words is "two hundred twenty million, eight hundred fifty-four thousand, three hundred ninety-seven".