988090901 has 4 divisors (see below), whose sum is σ = 1129246752. Its totient is φ = 846935052.

The previous prime is 988090897. The next prime is 988090921. The reversal of 988090901 is 109090889.

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, and also an emirpimes, since its reverse is a distinct semiprime: 109090889 = 1459 ⋅74771.

It is a cyclic number.

It is not a de Polignac number, because 988090901 - 2² = 988090897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988090921) 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, 70577915 + ... + 70577928.

It is an arithmetic number, because the mean of its divisors is an integer number (282311688).

Almost surely, 2^988090901 is an apocalyptic number.

It is an amenable number.

988090901 is a deficient number, since it is larger than the sum of its proper divisors (141155851).

988090901 is a wasteful number, since it uses less digits than its factorization.

988090901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141155850.

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 988090901 is about 31433.9132307767. The cubic root of 988090901 is about 996.0144367219.

The spelling of 988090901 in words is "nine hundred eighty-eight million, ninety thousand, nine hundred one".