147819447 has 6 divisors (see below), whose sum is σ = 213516992. Its totient is φ = 98546292.

The previous prime is 147819421. The next prime is 147819457. The reversal of 147819447 is 744918741.

It is a happy number.

It is not a de Polignac number, because 147819447 - 2⁶ = 147819383 is a prime.

It is a super-2 number, since 2×147819447² = 43701177822771618, 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 (147819407) 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 5 ways as a sum of consecutive naturals, for example, 8212183 + ... + 8212200.

Almost surely, 2^147819447 is an apocalyptic number.

147819447 is a deficient number, since it is larger than the sum of its proper divisors (65697545).

147819447 is a wasteful number, since it uses less digits than its factorization.

147819447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16424389 (or 16424386 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 147819447 is about 12158.1021134057. The cubic root of 147819447 is about 528.7420587980.

The spelling of 147819447 in words is "one hundred forty-seven million, eight hundred nineteen thousand, four hundred forty-seven".