90228445739 has 4 divisors (see below), whose sum is σ = 90301743840. Its totient is φ = 90155147640.

The previous prime is 90228445733. The next prime is 90228445753. The reversal of 90228445739 is 93754482209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93754482209 = 283 ⋅331287923.

It is a cyclic number.

It is not a de Polignac number, because 90228445739 - 2¹² = 90228441643 is a prime.

It is a super-2 number, since 2×90228445739² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90228445733) 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, 36647204 + ... + 36649665.

It is an arithmetic number, because the mean of its divisors is an integer number (22575435960).

Almost surely, 2^90228445739 is an apocalyptic number.

90228445739 is a deficient number, since it is larger than the sum of its proper divisors (73298101).

90228445739 is a wasteful number, since it uses less digits than its factorization.

90228445739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73298100.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 90228445739 in words is "ninety billion, two hundred twenty-eight million, four hundred forty-five thousand, seven hundred thirty-nine".