398223754 has 8 divisors (see below), whose sum is σ = 598387140. Its totient is φ = 198761376.

The previous prime is 398223739. The next prime is 398223757. The reversal of 398223754 is 457322893.

It can be written as a sum of positive squares in 2 ways, for example, as 382007025 + 16216729 = 19545^2 + 4027^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 398223754.

It is not an unprimeable number, because it can be changed into a prime (398223757) 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, 173829 + ... + 176104.

Almost surely, 2^398223754 is an apocalyptic number.

398223754 is a deficient number, since it is larger than the sum of its proper divisors (200163386).

398223754 is a wasteful number, since it uses less digits than its factorization.

398223754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350504.

The product of its digits is 362880, while the sum is 43.

The square root of 398223754 is about 19955.5444425854. The cubic root of 398223754 is about 735.7140570171.

The spelling of 398223754 in words is "three hundred ninety-eight million, two hundred twenty-three thousand, seven hundred fifty-four".