98851621 has 4 divisors (see below), whose sum is σ = 107838144. Its totient is φ = 89865100.

The previous prime is 98851607. The next prime is 98851637. The reversal of 98851621 is 12615889.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 98851621 - 2¹⁷ = 98720549 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98851021) 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, 4493245 + ... + 4493266.

It is an arithmetic number, because the mean of its divisors is an integer number (26959536).

Almost surely, 2^98851621 is an apocalyptic number.

It is an amenable number.

98851621 is a deficient number, since it is larger than the sum of its proper divisors (8986523).

98851621 is a wasteful number, since it uses less digits than its factorization.

98851621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8986522.

The product of its digits is 34560, while the sum is 40.

The square root of 98851621 is about 9942.4152498274. The cubic root of 98851621 is about 462.3752705777.

The spelling of 98851621 in words is "ninety-eight million, eight hundred fifty-one thousand, six hundred twenty-one".