423940893 has 16 divisors (see below), whose sum is σ = 582905856. Its totient is φ = 273918960.

The previous prime is 423940837. The next prime is 423940897. The reversal of 423940893 is 398049324.

It is a happy number.

It is not a de Polignac number, because 423940893 - 2⁸ = 423940637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423940897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73 + ... + 29118.

It is an arithmetic number, because the mean of its divisors is an integer number (36431616).

Almost surely, 2^423940893 is an apocalyptic number.

It is an amenable number.

423940893 is a deficient number, since it is larger than the sum of its proper divisors (158964963).

423940893 is a wasteful number, since it uses less digits than its factorization.

423940893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29344.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 423940893 is about 20589.8249871144. The cubic root of 423940893 is about 751.2222399795. Note that the first 4 decimals are identical.

The spelling of 423940893 in words is "four hundred twenty-three million, nine hundred forty thousand, eight hundred ninety-three".