4921998349 has 8 divisors (see below), whose sum is σ = 5095204920. Its totient is φ = 4749024000.

The previous prime is 4921998313. The next prime is 4921998377. The reversal of 4921998349 is 9438991294.

It can be written as a sum of positive squares in 4 ways, for example, as 699338025 + 4222660324 = 26445^2 + 64982^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4921998349 - 2¹⁷ = 4921867277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4921998293 and 4921998302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921995349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14352 + ... + 100249.

It is an arithmetic number, because the mean of its divisors is an integer number (636900615).

Almost surely, 2^4921998349 is an apocalyptic number.

It is an amenable number.

4921998349 is a deficient number, since it is larger than the sum of its proper divisors (173206571).

4921998349 is a wasteful number, since it uses less digits than its factorization.

4921998349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116111.

The product of its digits is 5038848, while the sum is 58.

The square root of 4921998349 is about 70156.9551006883. The cubic root of 4921998349 is about 1701.0372388668.

The spelling of 4921998349 in words is "four billion, nine hundred twenty-one million, nine hundred ninety-eight thousand, three hundred forty-nine".