147894469 has 4 divisors (see below), whose sum is σ = 147918796. Its totient is φ = 147870144.

The previous prime is 147894457. The next prime is 147894493. The reversal of 147894469 is 964498741.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 964498741 = 2129 ⋅453029.

It can be written as a sum of positive squares in 2 ways, for example, as 108368100 + 39526369 = 10410^2 + 6287^2 .

It is a cyclic number.

It is not a de Polignac number, because 147894469 - 2⁹ = 147893957 is a prime.

It is a super-2 number, since 2×147894469² = 43745547921583922, which contains 22 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 (147894419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5767 + ... + 18139.

It is an arithmetic number, because the mean of its divisors is an integer number (36979699).

Almost surely, 2^147894469 is an apocalyptic number.

It is an amenable number.

147894469 is a deficient number, since it is larger than the sum of its proper divisors (24327).

147894469 is a wasteful number, since it uses less digits than its factorization.

147894469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24326.

The product of its digits is 1741824, while the sum is 52.

The square root of 147894469 is about 12161.1869897638. The cubic root of 147894469 is about 528.8314935300.

The spelling of 147894469 in words is "one hundred forty-seven million, eight hundred ninety-four thousand, four hundred sixty-nine".