853499623 has 2 divisors, whose sum is σ = 853499624. Its totient is φ = 853499622.

The previous prime is 853499599. The next prime is 853499641. The reversal of 853499623 is 326994358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 853499623 - 2²¹ = 851402471 is a prime.

It is a super-2 number, since 2×853499623² = 1456923212922284258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853499653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426749811 + 426749812.

It is an arithmetic number, because the mean of its divisors is an integer number (426749812).

Almost surely, 2^853499623 is an apocalyptic number.

853499623 is a deficient number, since it is larger than the sum of its proper divisors (1).

853499623 is an equidigital number, since it uses as much as digits as its factorization.

853499623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 49.

The square root of 853499623 is about 29214.7158637561. The cubic root of 853499623 is about 948.5664891334.

The spelling of 853499623 in words is "eight hundred fifty-three million, four hundred ninety-nine thousand, six hundred twenty-three".