101145989 has 8 divisors (see below), whose sum is σ = 115931328. Its totient is φ = 86444640.

The previous prime is 101145983. The next prime is 101146033. The reversal of 101145989 is 989541101.

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

It is a de Polignac number, because none of the positive numbers 2^k-101145989 is a prime.

It is a super-2 number, since 2×101145989² = 20461022181576242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101145983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18392 + ... + 23249.

It is an arithmetic number, because the mean of its divisors is an integer number (14491416).

Almost surely, 2^101145989 is an apocalyptic number.

It is an amenable number.

101145989 is a deficient number, since it is larger than the sum of its proper divisors (14785339).

101145989 is an equidigital number, since it uses as much as digits as its factorization.

101145989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41995.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 101145989 is about 10057.1362226033. The cubic root of 101145989 is about 465.9252230092.

The spelling of 101145989 in words is "one hundred one million, one hundred forty-five thousand, nine hundred eighty-nine".