98917709421 has 8 divisors (see below), whose sum is σ = 134957495200. Its totient is φ = 64411531632.

The previous prime is 98917709411. The next prime is 98917709431. The reversal of 98917709421 is 12490771989.

It is an interprime number because it is at equal distance from previous prime (98917709411) and next prime (98917709431).

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

It is not a de Polignac number, because 98917709421 - 2²² = 98913515117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98917709411) 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, 383401846 + ... + 383402103.

It is an arithmetic number, because the mean of its divisors is an integer number (16869686900).

Almost surely, 2^98917709421 is an apocalyptic number.

It is an amenable number.

98917709421 is a deficient number, since it is larger than the sum of its proper divisors (36039785779).

98917709421 is a wasteful number, since it uses less digits than its factorization.

98917709421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766803995.

The product of its (nonzero) digits is 2286144, while the sum is 57.

The spelling of 98917709421 in words is "ninety-eight billion, nine hundred seventeen million, seven hundred nine thousand, four hundred twenty-one".