223398437 has 4 divisors (see below), whose sum is σ = 225005760. Its totient is φ = 221791116.

The previous prime is 223398433. The next prime is 223398503. The reversal of 223398437 is 734893322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 734893322 = 2 ⋅367446661.

It is a cyclic number.

It is not a de Polignac number, because 223398437 - 2² = 223398433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223398394 and 223398403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223398433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803453 + ... + 803730.

It is an arithmetic number, because the mean of its divisors is an integer number (56251440).

Almost surely, 2^223398437 is an apocalyptic number.

It is an amenable number.

223398437 is a deficient number, since it is larger than the sum of its proper divisors (1607323).

223398437 is a wasteful number, since it uses less digits than its factorization.

223398437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607322.

The product of its digits is 217728, while the sum is 41.

The square root of 223398437 is about 14946.5192268969. The cubic root of 223398437 is about 606.7736463852.

The spelling of 223398437 in words is "two hundred twenty-three million, three hundred ninety-eight thousand, four hundred thirty-seven".