90216029 has 4 divisors (see below), whose sum is σ = 90253440. Its totient is φ = 90178620.

The previous prime is 90216019. The next prime is 90216037. The reversal of 90216029 is 92061209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90216029 is a prime.

It is a super-4 number, since 4×90216029⁴ (a number of 33 digits) contains 4444 as substring.

It is a pancake number, because a pancake can be divided into 90216029 parts by 13432 straight cuts.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90215992 and 90216010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90216019) 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, 14819 + ... + 20000.

It is an arithmetic number, because the mean of its divisors is an integer number (22563360).

Almost surely, 2^90216029 is an apocalyptic number.

It is an amenable number.

90216029 is a deficient number, since it is larger than the sum of its proper divisors (37411).

90216029 is a wasteful number, since it uses less digits than its factorization.

90216029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37410.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 90216029 is about 9498.2118843496. The cubic root of 90216029 is about 448.4987486641.

The spelling of 90216029 in words is "ninety million, two hundred sixteen thousand, twenty-nine".