224978393 has 4 divisors (see below), whose sum is σ = 225120000. Its totient is φ = 224836788.

The previous prime is 224978381. The next prime is 224978401. The reversal of 224978393 is 393879422.

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: 393879422 = 2 ⋅196939711.

It is a cyclic number.

It is not a de Polignac number, because 224978393 - 2¹⁰ = 224977369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224978293) 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, 68393 + ... + 71606.

It is an arithmetic number, because the mean of its divisors is an integer number (56280000).

Almost surely, 2^224978393 is an apocalyptic number.

It is an amenable number.

224978393 is a deficient number, since it is larger than the sum of its proper divisors (141607).

224978393 is a wasteful number, since it uses less digits than its factorization.

224978393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141606.

The product of its digits is 653184, while the sum is 47.

The square root of 224978393 is about 14999.2797493746. The cubic root of 224978393 is about 608.2007295802.

The spelling of 224978393 in words is "two hundred twenty-four million, nine hundred seventy-eight thousand, three hundred ninety-three".