989100401 has 4 divisors (see below), whose sum is σ = 990177600. Its totient is φ = 988023204.

The previous prime is 989100379. The next prime is 989100481. The reversal of 989100401 is 104001989.

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 989100401 - 2⁶ = 989100337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989100481) 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, 537221 + ... + 539058.

It is an arithmetic number, because the mean of its divisors is an integer number (247544400).

Almost surely, 2^989100401 is an apocalyptic number.

It is an amenable number.

989100401 is a deficient number, since it is larger than the sum of its proper divisors (1077199).

989100401 is a wasteful number, since it uses less digits than its factorization.

989100401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077198.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 989100401 is about 31449.9666295530. The cubic root of 989100401 is about 996.3535196768.

The spelling of 989100401 in words is "nine hundred eighty-nine million, one hundred thousand, four hundred one".