240198913 has 4 divisors (see below), whose sum is σ = 250642368. Its totient is φ = 229755460.

The previous prime is 240198911. The next prime is 240198941. The reversal of 240198913 is 319891042.

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.

It is a cyclic number.

It is not a de Polignac number, because 240198913 - 2¹ = 240198911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240198911) 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, 5221693 + ... + 5221738.

It is an arithmetic number, because the mean of its divisors is an integer number (62660592).

Almost surely, 2^240198913 is an apocalyptic number.

240198913 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

240198913 is a deficient number, since it is larger than the sum of its proper divisors (10443455).

240198913 is a wasteful number, since it uses less digits than its factorization.

240198913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10443454.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 240198913 is about 15498.3519446424. The cubic root of 240198913 is about 621.6181395978.

The spelling of 240198913 in words is "two hundred forty million, one hundred ninety-eight thousand, nine hundred thirteen".