998946001 has 2 divisors, whose sum is σ = 998946002. Its totient is φ = 998946000.

The previous prime is 998945921. The next prime is 998946019. The reversal of 998946001 is 100649899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 571449025 + 427496976 = 23905^2 + 20676^2 .

It is a cyclic number.

It is not a de Polignac number, because 998946001 - 2⁹ = 998945489 is a prime.

It is a super-2 number, since 2×998946001² = 1995786225827784002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (998946031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499473000 + 499473001.

It is an arithmetic number, because the mean of its divisors is an integer number (499473001).

Almost surely, 2^998946001 is an apocalyptic number.

It is an amenable number.

998946001 is a deficient number, since it is larger than the sum of its proper divisors (1).

998946001 is an equidigital number, since it uses as much as digits as its factorization.

998946001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 998946001 is about 31606.1070206376. The cubic root of 998946001 is about 999.6485434928.

The spelling of 998946001 in words is "nine hundred ninety-eight million, nine hundred forty-six thousand, one".