9021428859 has 4 divisors (see below), whose sum is σ = 12028571816. Its totient is φ = 6014285904.

The previous prime is 9021428813. The next prime is 9021428869. The reversal of 9021428859 is 9588241209.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9021428859 - 2⁹ = 9021428347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9021428869) 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, 1503571474 + ... + 1503571479.

It is an arithmetic number, because the mean of its divisors is an integer number (3007142954).

Almost surely, 2^9021428859 is an apocalyptic number.

9021428859 is a deficient number, since it is larger than the sum of its proper divisors (3007142957).

9021428859 is a wasteful number, since it uses less digits than its factorization.

9021428859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007142956.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 9021428859 is about 94981.2026613687. The cubic root of 9021428859 is about 2081.7333968722.

The spelling of 9021428859 in words is "nine billion, twenty-one million, four hundred twenty-eight thousand, eight hundred fifty-nine".