700008421 has 4 divisors (see below), whose sum is σ = 800009632. Its totient is φ = 600007212.

The previous prime is 700008401. The next prime is 700008433. The reversal of 700008421 is 124800007.

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 not a de Polignac number, because 700008421 - 2⁹ = 700007909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 700008392 and 700008401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (700008401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50000595 + ... + 50000608.

It is an arithmetic number, because the mean of its divisors is an integer number (200002408).

Almost surely, 2^700008421 is an apocalyptic number.

It is an amenable number.

700008421 is a deficient number, since it is larger than the sum of its proper divisors (100001211).

700008421 is a wasteful number, since it uses less digits than its factorization.

700008421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100001210.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 700008421 is about 26457.6722521086. The cubic root of 700008421 is about 887.9075622234.

Adding to 700008421 its reverse (124800007), we get a palindrome (824808428).

The spelling of 700008421 in words is "seven hundred million, eight thousand, four hundred twenty-one".