90069437 has 4 divisors (see below), whose sum is σ = 91985856. Its totient is φ = 88153020.

The previous prime is 90069407. The next prime is 90069439. The reversal of 90069437 is 73496009.

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 not a de Polignac number, because 90069437 - 2¹⁰ = 90068413 is a prime.

It is a super-2 number, since 2×90069437² = 16225006962993938, 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 90069437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90069439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958139 + ... + 958232.

It is an arithmetic number, because the mean of its divisors is an integer number (22996464).

Almost surely, 2^90069437 is an apocalyptic number.

It is an amenable number.

90069437 is a deficient number, since it is larger than the sum of its proper divisors (1916419).

90069437 is a wasteful number, since it uses less digits than its factorization.

90069437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916418.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 90069437 is about 9490.4919261332. The cubic root of 90069437 is about 448.2556951407.

The spelling of 90069437 in words is "ninety million, sixty-nine thousand, four hundred thirty-seven".