146308973 has 4 divisors (see below), whose sum is σ = 151354140. Its totient is φ = 141263808.

The previous prime is 146308961. The next prime is 146308993. The reversal of 146308973 is 379803641.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52954729 + 93354244 = 7277^2 + 9662^2 .

It is a cyclic number.

It is not a de Polignac number, because 146308973 - 2⁶ = 146308909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146308973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146308913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2522540 + ... + 2522597.

It is an arithmetic number, because the mean of its divisors is an integer number (37838535).

Almost surely, 2^146308973 is an apocalyptic number.

It is an amenable number.

146308973 is a deficient number, since it is larger than the sum of its proper divisors (5045167).

146308973 is an equidigital number, since it uses as much as digits as its factorization.

146308973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045166.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 146308973 is about 12095.8246101702. The cubic root of 146308973 is about 526.9349285405.

The spelling of 146308973 in words is "one hundred forty-six million, three hundred eight thousand, nine hundred seventy-three".