223406447 has 8 divisors (see below), whose sum is σ = 245270352. Its totient is φ = 201801600.

The previous prime is 223406441. The next prime is 223406497. The reversal of 223406447 is 744604322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223406447 - 2⁴ = 223406431 is a prime.

It is a super-2 number, since 2×223406447² = 99820881122327618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223406441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62954 + ... + 66407.

It is an arithmetic number, because the mean of its divisors is an integer number (30658794).

Almost surely, 2^223406447 is an apocalyptic number.

223406447 is a deficient number, since it is larger than the sum of its proper divisors (21863905).

223406447 is a wasteful number, since it uses less digits than its factorization.

223406447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129529.

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 223406447 is about 14946.7871798591. The cubic root of 223406447 is about 606.7808982993.

The spelling of 223406447 in words is "two hundred twenty-three million, four hundred six thousand, four hundred forty-seven".