146889473 has 4 divisors (see below), whose sum is σ = 146964528. Its totient is φ = 146814420.

The previous prime is 146889373. The next prime is 146889481. The reversal of 146889473 is 374988641.

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 146889473 - 2⁸ = 146889217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146889373) 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, 34511 + ... + 38532.

It is an arithmetic number, because the mean of its divisors is an integer number (36741132).

Almost surely, 2^146889473 is an apocalyptic number.

It is an amenable number.

146889473 is a deficient number, since it is larger than the sum of its proper divisors (75055).

146889473 is an equidigital number, since it uses as much as digits as its factorization.

146889473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75054.

The product of its digits is 1161216, while the sum is 50.

The square root of 146889473 is about 12119.7967392197. The cubic root of 146889473 is about 527.6309033257.

The spelling of 146889473 in words is "one hundred forty-six million, eight hundred eighty-nine thousand, four hundred seventy-three".