234391689940 has 12 divisors (see below), whose sum is σ = 492222548916. Its totient is φ = 93756675968.

The previous prime is 234391689937. The next prime is 234391689941. The reversal of 234391689940 is 49986193432.

It can be written as a sum of positive squares in 2 ways, for example, as 72211513284 + 162180176656 = 268722^2 + 402716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234391689941) 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, 5859792229 + ... + 5859792268.

It is an arithmetic number, because the mean of its divisors is an integer number (41018545743).

Almost surely, 2^234391689940 is an apocalyptic number.

234391689940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234391689940 is an abundant number, since it is smaller than the sum of its proper divisors (257830858976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

234391689940 is a wasteful number, since it uses less digits than its factorization.

234391689940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11719584506 (or 11719584504 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 58.

The spelling of 234391689940 in words is "two hundred thirty-four billion, three hundred ninety-one million, six hundred eighty-nine thousand, nine hundred forty".