421008799 has 4 divisors (see below), whose sum is σ = 434589760. Its totient is φ = 407427840.

The previous prime is 421008793. The next prime is 421008803. The reversal of 421008799 is 997800124.

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 421008799 - 2⁷ = 421008671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421008793) 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, 6790434 + ... + 6790495.

It is an arithmetic number, because the mean of its divisors is an integer number (108647440).

Almost surely, 2^421008799 is an apocalyptic number.

421008799 is a deficient number, since it is larger than the sum of its proper divisors (13580961).

421008799 is a wasteful number, since it uses less digits than its factorization.

421008799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13580960.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 421008799 is about 20518.4989460730. The cubic root of 421008799 is about 749.4863439940.

The spelling of 421008799 in words is "four hundred twenty-one million, eight thousand, seven hundred ninety-nine".