423398340 has 72 divisors (see below), whose sum is σ = 1331890560. Its totient is φ = 112904928.

The previous prime is 423398333. The next prime is 423398351. The reversal of 423398340 is 43893324.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 423398295 and 423398304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38700 + ... + 48419.

It is an arithmetic number, because the mean of its divisors is an integer number (18498480).

Almost surely, 2^423398340 is an apocalyptic number.

It is an amenable number.

423398340 is an abundant number, since it is smaller than the sum of its proper divisors (908492220).

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

423398340 is a wasteful number, since it uses less digits than its factorization.

423398340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87143 (or 87129 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 423398340 is about 20576.6454992061. The cubic root of 423398340 is about 750.9016356365.

The spelling of 423398340 in words is "four hundred twenty-three million, three hundred ninety-eight thousand, three hundred forty".