234249921 has 8 divisors (see below), whose sum is σ = 347036960. Its totient is φ = 156166596.

The previous prime is 234249901. The next prime is 234249929. The reversal of 234249921 is 129942432.

It is not a de Polignac number, because 234249921 - 2¹⁴ = 234233537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234249929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4337935 + ... + 4337988.

It is an arithmetic number, because the mean of its divisors is an integer number (43379620).

Almost surely, 2^234249921 is an apocalyptic number.

It is an amenable number.

234249921 is a deficient number, since it is larger than the sum of its proper divisors (112787039).

234249921 is an equidigital number, since it uses as much as digits as its factorization.

234249921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8675932 (or 8675926 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 234249921 is about 15305.2252841962. The cubic root of 234249921 is about 616.4433203674.

The spelling of 234249921 in words is "two hundred thirty-four million, two hundred forty-nine thousand, nine hundred twenty-one".