426344493 has 8 divisors (see below), whose sum is σ = 569945088. Its totient is φ = 283486784.

The previous prime is 426344489. The next prime is 426344507. The reversal of 426344493 is 394443624.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 426344493 - 2² = 426344489 is a prime.

It is a super-2 number, since 2×426344493² = 363539253422854098, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426344483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184380 + ... + 186677.

It is an arithmetic number, because the mean of its divisors is an integer number (71243136).

Almost surely, 2^426344493 is an apocalyptic number.

It is an amenable number.

426344493 is a deficient number, since it is larger than the sum of its proper divisors (143600595).

426344493 is a wasteful number, since it uses less digits than its factorization.

426344493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371443.

The product of its digits is 248832, while the sum is 39.

The square root of 426344493 is about 20648.1111242651. Note that the first 4 decimals coincide. The cubic root of 426344493 is about 752.6392897492.

The spelling of 426344493 in words is "four hundred twenty-six million, three hundred forty-four thousand, four hundred ninety-three".