420899577 has 8 divisors (see below), whose sum is σ = 641370816. Its totient is φ = 240514032.

The previous prime is 420899513. The next prime is 420899579. The reversal of 420899577 is 775998024.

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

It is not a de Polignac number, because 420899577 - 2⁶ = 420899513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420899579) 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, 10021398 + ... + 10021439.

It is an arithmetic number, because the mean of its divisors is an integer number (80171352).

Almost surely, 2^420899577 is an apocalyptic number.

It is an amenable number.

420899577 is a deficient number, since it is larger than the sum of its proper divisors (220471239).

420899577 is a wasteful number, since it uses less digits than its factorization.

420899577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20042847.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 420899577 is about 20515.8372239594. The cubic root of 420899577 is about 749.4215254933.

The spelling of 420899577 in words is "four hundred twenty million, eight hundred ninety-nine thousand, five hundred seventy-seven".