98002021 has 4 divisors (see below), whose sum is σ = 105540652. Its totient is φ = 90463392.

The previous prime is 98002007. The next prime is 98002027. The reversal of 98002021 is 12020089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12020089 = 3467².

It can be written as a sum of positive squares in 2 ways, for example, as 50253921 + 47748100 = 7089^2 + 6910^2 .

It is a cyclic number.

It is not a de Polignac number, because 98002021 - 2²¹ = 95904869 is a prime.

It is a super-2 number, since 2×98002021² = 19208792240168882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 98001983 and 98002001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98002027) 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, 3769296 + ... + 3769321.

It is an arithmetic number, because the mean of its divisors is an integer number (26385163).

Almost surely, 2^98002021 is an apocalyptic number.

It is an amenable number.

98002021 is a deficient number, since it is larger than the sum of its proper divisors (7538631).

98002021 is a wasteful number, since it uses less digits than its factorization.

98002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7538630.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 98002021 is about 9899.5970120000. The cubic root of 98002021 is about 461.0467984670.

The spelling of 98002021 in words is "ninety-eight million, two thousand, twenty-one".