234429993 has 24 divisors (see below), whose sum is σ = 387528128. Its totient is φ = 133775712.

The previous prime is 234429977. The next prime is 234430013. The reversal of 234429993 is 399924432.

It is a happy number.

It is not a de Polignac number, because 234429993 - 2⁴ = 234429977 is a prime.

It is a super-3 number, since 3×234429993³ (a number of 26 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234429953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53130 + ... + 57372.

Almost surely, 2^234429993 is an apocalyptic number.

It is an amenable number.

234429993 is a deficient number, since it is larger than the sum of its proper divisors (153098135).

234429993 is a wasteful number, since it uses less digits than its factorization.

234429993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133 (or 5130 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 234429993 is about 15311.1068509106. The cubic root of 234429993 is about 616.6012368207.

The spelling of 234429993 in words is "two hundred thirty-four million, four hundred twenty-nine thousand, nine hundred ninety-three".