240213399 has 4 divisors (see below), whose sum is σ = 320284536. Its totient is φ = 160142264.

The previous prime is 240213353. The next prime is 240213427. The reversal of 240213399 is 993312042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240213399 - 2⁷ = 240213271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240213319) 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, 40035564 + ... + 40035569.

It is an arithmetic number, because the mean of its divisors is an integer number (80071134).

Almost surely, 2^240213399 is an apocalyptic number.

240213399 is a deficient number, since it is larger than the sum of its proper divisors (80071137).

240213399 is an equidigital number, since it uses as much as digits as its factorization.

240213399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80071136.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 240213399 is about 15498.8192776095. The cubic root of 240213399 is about 621.6306356013.

The spelling of 240213399 in words is "two hundred forty million, two hundred thirteen thousand, three hundred ninety-nine".