420013963 has 4 divisors (see below), whose sum is σ = 430258248. Its totient is φ = 409769680.

The previous prime is 420013933. The next prime is 420013969. The reversal of 420013963 is 369310024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420013963 - 2¹⁷ = 419882891 is a prime.

It is a super-2 number, since 2×420013963² = 352823458229930738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420013969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5122081 + ... + 5122162.

It is an arithmetic number, because the mean of its divisors is an integer number (107564562).

Almost surely, 2^420013963 is an apocalyptic number.

420013963 is a deficient number, since it is larger than the sum of its proper divisors (10244285).

420013963 is a wasteful number, since it uses less digits than its factorization.

420013963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10244284.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 420013963 is about 20494.2421914059. The cubic root of 420013963 is about 748.8955376081.

Adding to 420013963 its reverse (369310024), we get a palindrome (789323987).

The spelling of 420013963 in words is "four hundred twenty million, thirteen thousand, nine hundred sixty-three".