4921399284 has 12 divisors (see below), whose sum is σ = 11483265024. Its totient is φ = 1640466424.

The previous prime is 4921399283. The next prime is 4921399313. The reversal of 4921399284 is 4829931294.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921399283) 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, 205058292 + ... + 205058315.

It is an arithmetic number, because the mean of its divisors is an integer number (956938752).

Almost surely, 2^4921399284 is an apocalyptic number.

It is an amenable number.

4921399284 is an abundant number, since it is smaller than the sum of its proper divisors (6561865740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4921399284 is a wasteful number, since it uses less digits than its factorization.

4921399284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410116614 (or 410116612 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 4921399284 is about 70152.6855081115. The cubic root of 4921399284 is about 1700.9682239975.

The spelling of 4921399284 in words is "four billion, nine hundred twenty-one million, three hundred ninety-nine thousand, two hundred eighty-four".