984090845 has 16 divisors (see below), whose sum is σ = 1249395840. Its totient is φ = 742037184.

The previous prime is 984090827. The next prime is 984090871. The reversal of 984090845 is 548090489.

It is a cyclic number.

It is not a de Polignac number, because 984090845 - 2¹² = 984086749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 984090845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7577 + ... + 45006.

It is an arithmetic number, because the mean of its divisors is an integer number (78087240).

Almost surely, 2^984090845 is an apocalyptic number.

984090845 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

984090845 is a deficient number, since it is larger than the sum of its proper divisors (265304995).

984090845 is a wasteful number, since it uses less digits than its factorization.

984090845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52804.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 984090845 is about 31370.2222657092. Note that the first 4 decimals coincide. The cubic root of 984090845 is about 994.6685747518.

The spelling of 984090845 in words is "nine hundred eighty-four million, ninety thousand, eight hundred forty-five".