146009471 has 4 divisors (see below), whose sum is σ = 153694200. Its totient is φ = 138324744.

The previous prime is 146009449. The next prime is 146009477. The reversal of 146009471 is 174900641.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146009471 is a prime.

It is a super-3 number, since 3×146009471³ (a number of 25 digits) contains 333 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 (146009477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842336 + ... + 3842373.

It is an arithmetic number, because the mean of its divisors is an integer number (38423550).

Almost surely, 2^146009471 is an apocalyptic number.

146009471 is a deficient number, since it is larger than the sum of its proper divisors (7684729).

146009471 is an equidigital number, since it uses as much as digits as its factorization.

146009471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684728.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 146009471 is about 12083.4378800075. The cubic root of 146009471 is about 526.5751286102.

The spelling of 146009471 in words is "one hundred forty-six million, nine thousand, four hundred seventy-one".