812909733 has 8 divisors (see below), whose sum is σ = 1090783968. Its totient is φ = 538487664.

The previous prime is 812909687. The next prime is 812909767. The reversal of 812909733 is 337909218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 812909733 - 2¹⁰ = 812908709 is a prime.

It is a super-2 number, since 2×812909733² = 1321644468012262578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812909233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862491 + ... + 863432.

It is an arithmetic number, because the mean of its divisors is an integer number (136347996).

Almost surely, 2^812909733 is an apocalyptic number.

It is an amenable number.

812909733 is a deficient number, since it is larger than the sum of its proper divisors (277874235).

812909733 is a wasteful number, since it uses less digits than its factorization.

812909733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726083.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 812909733 is about 28511.5719138738. The cubic root of 812909733 is about 933.2846175112.

The spelling of 812909733 in words is "eight hundred twelve million, nine hundred nine thousand, seven hundred thirty-three".