90069823 has 8 divisors (see below), whose sum is σ = 95022720. Its totient is φ = 85138200.

The previous prime is 90069799. The next prime is 90069829. The reversal of 90069823 is 32896009.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90069823 is a prime.

It is a super-2 number, since 2×90069823² = 16225146030502658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90069829) 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, 3798 + ... + 13948.

It is an arithmetic number, because the mean of its divisors is an integer number (11877840).

Almost surely, 2^90069823 is an apocalyptic number.

90069823 is a deficient number, since it is larger than the sum of its proper divisors (4952897).

90069823 is a wasteful number, since it uses less digits than its factorization.

90069823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10637.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 90069823 is about 9490.5122622543. The cubic root of 90069823 is about 448.2563354854.

The spelling of 90069823 in words is "ninety million, sixty-nine thousand, eight hundred twenty-three".