21400302239 has 8 divisors (see below), whose sum is σ = 22005820368. Its totient is φ = 20796212160.

The previous prime is 21400302173. The next prime is 21400302241. The reversal of 21400302239 is 93220300412.

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

It is a cyclic number.

It is not a de Polignac number, because 21400302239 - 2⁸ = 21400301983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21400302289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326582 + ... + 386595.

It is an arithmetic number, because the mean of its divisors is an integer number (2750727546).

Almost surely, 2^21400302239 is an apocalyptic number.

21400302239 is a deficient number, since it is larger than the sum of its proper divisors (605518129).

21400302239 is an equidigital number, since it uses as much as digits as its factorization.

21400302239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714025.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 21400302239 in words is "twenty-one billion, four hundred million, three hundred two thousand, two hundred thirty-nine".