4998953021 has 2 divisors, whose sum is σ = 4998953022. Its totient is φ = 4998953020.

The previous prime is 4998952993. The next prime is 4998953027. The reversal of 4998953021 is 1203598994.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3090136921 + 1908816100 = 55589^2 + 43690^2 .

It is a cyclic number.

It is not a de Polignac number, because 4998953021 - 2¹⁴ = 4998936637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4998953027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499476510 + 2499476511.

It is an arithmetic number, because the mean of its divisors is an integer number (2499476511).

Almost surely, 2^4998953021 is an apocalyptic number.

It is an amenable number.

4998953021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4998953021 is an equidigital number, since it uses as much as digits as its factorization.

4998953021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 4998953021 is about 70703.2744715547. The cubic root of 4998953021 is about 1709.8565844179.

The spelling of 4998953021 in words is "four billion, nine hundred ninety-eight million, nine hundred fifty-three thousand, twenty-one".