146945947 has 4 divisors (see below), whose sum is σ = 147009600. Its totient is φ = 146882296.

The previous prime is 146945893. The next prime is 146945959. The reversal of 146945947 is 749549641.

146945947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749549641 = 43 ⋅17431387.

It is a cyclic number.

It is not a de Polignac number, because 146945947 - 2¹⁹ = 146421659 is a prime.

It is a super-2 number, since 2×146945947² = 43186222679453618, which contains 22 as substring.

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 146945947.

It is not an unprimeable number, because it can be changed into a prime (146945047) 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, 28228 + ... + 33025.

It is an arithmetic number, because the mean of its divisors is an integer number (36752400).

Almost surely, 2^146945947 is an apocalyptic number.

146945947 is a deficient number, since it is larger than the sum of its proper divisors (63653).

146945947 is an equidigital number, since it uses as much as digits as its factorization.

146945947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63652.

The product of its digits is 1088640, while the sum is 49.

The square root of 146945947 is about 12122.1263398795. The cubic root of 146945947 is about 527.6985133664.

The spelling of 146945947 in words is "one hundred forty-six million, nine hundred forty-five thousand, nine hundred forty-seven".