421459493 has 16 divisors (see below), whose sum is σ = 519555456. Its totient is φ = 332925120.

The previous prime is 421459457. The next prime is 421459499. The reversal of 421459493 is 394954124.

It is a cyclic number.

It is not a de Polignac number, because 421459493 - 2¹⁸ = 421197349 is a prime.

It is a super-3 number, since 3×421459493³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421459493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421459499) 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, 58763 + ... + 65543.

It is an arithmetic number, because the mean of its divisors is an integer number (32472216).

Almost surely, 2^421459493 is an apocalyptic number.

It is an amenable number.

421459493 is a deficient number, since it is larger than the sum of its proper divisors (98095963).

421459493 is a wasteful number, since it uses less digits than its factorization.

421459493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484.

The product of its digits is 155520, while the sum is 41.

The square root of 421459493 is about 20529.4786343930. The cubic root of 421459493 is about 749.7536927488.

The spelling of 421459493 in words is "four hundred twenty-one million, four hundred fifty-nine thousand, four hundred ninety-three".