90918282729 has 8 divisors (see below), whose sum is σ = 121252857120. Its totient is φ = 60597948416.

The previous prime is 90918282701. The next prime is 90918282769. The reversal of 90918282729 is 92728281909.

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

It is a cyclic number.

It is not a de Polignac number, because 90918282729 - 2⁷ = 90918282601 is a prime.

It is a super-2 number, since 2×90918282729² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90918282769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3545112 + ... + 3570665.

It is an arithmetic number, because the mean of its divisors is an integer number (15156607140).

Almost surely, 2^90918282729 is an apocalyptic number.

It is an amenable number.

90918282729 is a deficient number, since it is larger than the sum of its proper divisors (30334574391).

90918282729 is a wasteful number, since it uses less digits than its factorization.

90918282729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7120039.

The product of its (nonzero) digits is 2612736, while the sum is 57.

It can be divided in two parts, 90 and 918282729, that added together give a palindrome (918282819).

The spelling of 90918282729 in words is "ninety billion, nine hundred eighteen million, two hundred eighty-two thousand, seven hundred twenty-nine".