9028723442 has 6 divisors (see below), whose sum is σ = 13543286733. Its totient is φ = 4514294532.

The previous prime is 9028723441. The next prime is 9028723493. The reversal of 9028723442 is 2443278209.

It can be written as a sum of positive squares in 2 ways, for example, as 6215587921 + 2813135521 = 78839^2 + 53039^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=67189.

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 9028723442.

It is not an unprimeable number, because it can be changed into a prime (9028723441) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 100784 + ... + 167972.

Almost surely, 2^9028723442 is an apocalyptic number.

9028723442 is a deficient number, since it is larger than the sum of its proper divisors (4514563291).

9028723442 is an frugal number, since it uses more digits than its factorization.

9028723442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134380 (or 67191 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 9028723442 is about 95019.5950422859. The cubic root of 9028723442 is about 2082.2943311484.

The spelling of 9028723442 in words is "nine billion, twenty-eight million, seven hundred twenty-three thousand, four hundred forty-two".