918029969 has 4 divisors (see below), whose sum is σ = 930605796. Its totient is φ = 905454144.

The previous prime is 918029963. The next prime is 918029993. The reversal of 918029969 is 969920819.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 474716944 + 443313025 = 21788^2 + 21055^2 .

It is a cyclic number.

It is not a de Polignac number, because 918029969 - 2¹² = 918025873 is a prime.

It is a super-2 number, since 2×918029969² = 1685558047964281922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 918029969.

It is not an unprimeable number, because it can be changed into a prime (918029963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6287804 + ... + 6287949.

It is an arithmetic number, because the mean of its divisors is an integer number (232651449).

Almost surely, 2^918029969 is an apocalyptic number.

It is an amenable number.

918029969 is a deficient number, since it is larger than the sum of its proper divisors (12575827).

918029969 is a wasteful number, since it uses less digits than its factorization.

918029969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12575826.

The product of its (nonzero) digits is 629856, while the sum is 53.

The square root of 918029969 is about 30299.0093732452. The cubic root of 918029969 is about 971.8941162950.

The spelling of 918029969 in words is "nine hundred eighteen million, twenty-nine thousand, nine hundred sixty-nine".