146000991 has 4 divisors (see below), whose sum is σ = 194667992. Its totient is φ = 97333992.

The previous prime is 146000983. The next prime is 146001017. The reversal of 146000991 is 199000641.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 146000991 - 2³ = 146000983 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 (146000971) 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, 24333496 + ... + 24333501.

It is an arithmetic number, because the mean of its divisors is an integer number (48666998).

Almost surely, 2^146000991 is an apocalyptic number.

146000991 is a deficient number, since it is larger than the sum of its proper divisors (48667001).

146000991 is an equidigital number, since it uses as much as digits as its factorization.

146000991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48667000.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 146000991 is about 12083.0869813968. The cubic root of 146000991 is about 526.5649341950.

The spelling of 146000991 in words is "one hundred forty-six million, nine hundred ninety-one", and thus it is an aban number.