101092989 has 4 divisors (see below), whose sum is σ = 134790656. Its totient is φ = 67395324.

The previous prime is 101092987. The next prime is 101092997. The reversal of 101092989 is 989290101.

It is a happy number.

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 not a de Polignac number, because 101092989 - 2¹ = 101092987 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101092987) 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, 16848829 + ... + 16848834.

It is an arithmetic number, because the mean of its divisors is an integer number (33697664).

Almost surely, 2^101092989 is an apocalyptic number.

It is an amenable number.

101092989 is a deficient number, since it is larger than the sum of its proper divisors (33697667).

101092989 is an equidigital number, since it uses as much as digits as its factorization.

101092989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33697666.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 101092989 is about 10054.5009324183. The cubic root of 101092989 is about 465.8438279501.

The spelling of 101092989 in words is "one hundred one million, ninety-two thousand, nine hundred eighty-nine".