920099813 has 2 divisors, whose sum is σ = 920099814. Its totient is φ = 920099812.

The previous prime is 920099773. The next prime is 920099821. The reversal of 920099813 is 318990029.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604078084 + 316021729 = 24578^2 + 17777^2 .

It is a cyclic number.

It is not a de Polignac number, because 920099813 - 2¹⁴ = 920083429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920099113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460049906 + 460049907.

It is an arithmetic number, because the mean of its divisors is an integer number (460049907).

Almost surely, 2^920099813 is an apocalyptic number.

It is an amenable number.

920099813 is a deficient number, since it is larger than the sum of its proper divisors (1).

920099813 is an equidigital number, since it uses as much as digits as its factorization.

920099813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 920099813 is about 30333.1471001609. The cubic root of 920099813 is about 972.6239977761.

The spelling of 920099813 in words is "nine hundred twenty million, ninety-nine thousand, eight hundred thirteen".