812532099 has 16 divisors (see below), whose sum is σ = 1136337408. Its totient is φ = 515830752.

The previous prime is 812532059. The next prime is 812532163. The reversal of 812532099 is 990235218.

It is not a de Polignac number, because 812532099 - 2¹⁶ = 812466563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (812532059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72657 + ... + 83090.

It is an arithmetic number, because the mean of its divisors is an integer number (71021088).

Almost surely, 2^812532099 is an apocalyptic number.

812532099 is a deficient number, since it is larger than the sum of its proper divisors (323805309).

812532099 is a wasteful number, since it uses less digits than its factorization.

812532099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155834.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 812532099 is about 28504.9486756247. The cubic root of 812532099 is about 933.1400772349.

The spelling of 812532099 in words is "eight hundred twelve million, five hundred thirty-two thousand, ninety-nine".