243793401 has 16 divisors (see below), whose sum is σ = 339422400. Its totient is φ = 155451968.

The previous prime is 243793387. The next prime is 243793411. The reversal of 243793401 is 104397342.

It is a cyclic number.

It is not a de Polignac number, because 243793401 - 2⁶ = 243793337 is a prime.

It is a super-2 number, since 2×243793401² = 118870444742293602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243793411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3786 + ... + 22403.

It is an arithmetic number, because the mean of its divisors is an integer number (21213900).

Almost surely, 2^243793401 is an apocalyptic number.

It is an amenable number.

243793401 is a deficient number, since it is larger than the sum of its proper divisors (95628999).

243793401 is a wasteful number, since it uses less digits than its factorization.

243793401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26328.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 243793401 is about 15613.8848785304. The cubic root of 243793401 is about 624.7035616077.

The spelling of 243793401 in words is "two hundred forty-three million, seven hundred ninety-three thousand, four hundred one".