224379391 has 2 divisors, whose sum is σ = 224379392. Its totient is φ = 224379390.

The previous prime is 224379377. The next prime is 224379403. The reversal of 224379391 is 193973422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 224379391 - 2¹¹ = 224377343 is a prime.

It is a super-2 number, since 2×224379391² = 100692222211061762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224379691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112189695 + 112189696.

It is an arithmetic number, because the mean of its divisors is an integer number (112189696).

Almost surely, 2^224379391 is an apocalyptic number.

224379391 is a deficient number, since it is larger than the sum of its proper divisors (1).

224379391 is an equidigital number, since it uses as much as digits as its factorization.

224379391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 224379391 is about 14979.2987486064. The cubic root of 224379391 is about 607.6604743521.

The spelling of 224379391 in words is "two hundred twenty-four million, three hundred seventy-nine thousand, three hundred ninety-one".