984478645 has 16 divisors (see below), whose sum is σ = 1207560960. Its totient is φ = 770313024.

The previous prime is 984478643. The next prime is 984478667. The reversal of 984478645 is 546874489.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 984478645 - 2¹ = 984478643 is a prime.

It is a super-2 number, since 2×984478645² = 1938396404922072050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984478643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30619 + ... + 53911.

It is an arithmetic number, because the mean of its divisors is an integer number (75472560).

Almost surely, 2^984478645 is an apocalyptic number.

It is an amenable number.

984478645 is a deficient number, since it is larger than the sum of its proper divisors (223082315).

984478645 is a wasteful number, since it uses less digits than its factorization.

984478645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23484.

The product of its digits is 7741440, while the sum is 55.

The square root of 984478645 is about 31376.4026778087. The cubic root of 984478645 is about 994.7992137126.

The spelling of 984478645 in words is "nine hundred eighty-four million, four hundred seventy-eight thousand, six hundred forty-five".