146270447 has 4 divisors (see below), whose sum is σ = 148453656. Its totient is φ = 144087240.

The previous prime is 146270441. The next prime is 146270489. The reversal of 146270447 is 744072641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744072641 = 13 ⋅57236357.

It is a cyclic number.

It is not a de Polignac number, because 146270447 - 2⁸ = 146270191 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 (146270441) 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, 1091504 + ... + 1091637.

It is an arithmetic number, because the mean of its divisors is an integer number (37113414).

Almost surely, 2^146270447 is an apocalyptic number.

146270447 is a deficient number, since it is larger than the sum of its proper divisors (2183209).

146270447 is an equidigital number, since it uses as much as digits as its factorization.

146270447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183208.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 146270447 is about 12094.2319723081. The cubic root of 146270447 is about 526.8886737397. Note that the first 3 decimals are identical.

The spelling of 146270447 in words is "one hundred forty-six million, two hundred seventy thousand, four hundred forty-seven".