90070229 has 4 divisors (see below), whose sum is σ = 90757920. Its totient is φ = 89382540.

The previous prime is 90070219. The next prime is 90070237. The reversal of 90070229 is 92207009.

It is a happy number.

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 90070229 - 2⁴ = 90070213 is a prime.

It is a super-2 number, since 2×90070229² = 16225292304224882, 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 (90070219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343649 + ... + 343910.

It is an arithmetic number, because the mean of its divisors is an integer number (22689480).

Almost surely, 2^90070229 is an apocalyptic number.

It is an amenable number.

90070229 is a deficient number, since it is larger than the sum of its proper divisors (687691).

90070229 is a wasteful number, since it uses less digits than its factorization.

90070229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687690.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 90070229 is about 9490.5336520135. The cubic root of 90070229 is about 448.2570090065.

The spelling of 90070229 in words is "ninety million, seventy thousand, two hundred twenty-nine".