420626897 has 4 divisors (see below), whose sum is σ = 422740800. Its totient is φ = 418512996.

The previous prime is 420626891. The next prime is 420626917. The reversal of 420626897 is 798626024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420626897 - 2⁴ = 420626881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420626891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056653 + ... + 1057050.

It is an arithmetic number, because the mean of its divisors is an integer number (105685200).

Almost surely, 2^420626897 is an apocalyptic number.

It is an amenable number.

420626897 is a deficient number, since it is larger than the sum of its proper divisors (2113903).

420626897 is a wasteful number, since it uses less digits than its factorization.

420626897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113902.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 420626897 is about 20509.1905496048. The cubic root of 420626897 is about 749.2596528293.

The spelling of 420626897 in words is "four hundred twenty million, six hundred twenty-six thousand, eight hundred ninety-seven".