98406401 has 4 divisors (see below), whose sum is σ = 98427972. Its totient is φ = 98384832.

The previous prime is 98406383. The next prime is 98406419. The reversal of 98406401 is 10460489.

It is a Cunningham number, because it is equal to 9920²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10460489 = 13 ⋅804653.

It is an interprime number because it is at equal distance from previous prime (98406383) and next prime (98406419).

It can be written as a sum of positive squares in 2 ways, for example, as 33362176 + 65044225 = 5776^2 + 8065^2 .

It is a cyclic number.

It is not a de Polignac number, because 98406401 - 2¹⁸ = 98144257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98406461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956 + ... + 14061.

It is an arithmetic number, because the mean of its divisors is an integer number (24606993).

Almost surely, 2^98406401 is an apocalyptic number.

It is an amenable number.

98406401 is a deficient number, since it is larger than the sum of its proper divisors (21571).

98406401 is a wasteful number, since it uses less digits than its factorization.

98406401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21570.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 98406401 is about 9920.0000504032. Note that the first 4 decimals coincide. The cubic root of 98406401 is about 461.6800584043.

The spelling of 98406401 in words is "ninety-eight million, four hundred six thousand, four hundred one".