9420813 has 8 divisors (see below), whose sum is σ = 13956800. Its totient is φ = 6280524.

The previous prime is 9420811. The next prime is 9420833. The reversal of 9420813 is 3180249.

It is not a de Polignac number, because 9420813 - 2¹ = 9420811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 348919 = 9420813 / (9 + 4 + 2 + 0 + 8 + 1 + 3).

It is a Duffinian number.

9420813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9420811) 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, 174433 + ... + 174486.

It is an arithmetic number, because the mean of its divisors is an integer number (1744600).

Almost surely, 2^9420813 is an apocalyptic number.

It is an amenable number.

9420813 is a deficient number, since it is larger than the sum of its proper divisors (4535987).

9420813 is a wasteful number, since it uses less digits than its factorization.

9420813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348928 (or 348922 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 9420813 is about 3069.3342926439. The cubic root of 9420813 is about 211.2010766345.

The spelling of 9420813 in words is "nine million, four hundred twenty thousand, eight hundred thirteen".