143947469 has 2 divisors, whose sum is σ = 143947470. Its totient is φ = 143947468.

The previous prime is 143947429. The next prime is 143947541. The reversal of 143947469 is 964749341.

143947469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88266025 + 55681444 = 9395^2 + 7462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143947469 is a prime.

It is a super-2 number, since 2×143947469² = 41441747663011922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143947429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71973734 + 71973735.

It is an arithmetic number, because the mean of its divisors is an integer number (71973735).

Almost surely, 2^143947469 is an apocalyptic number.

It is an amenable number.

143947469 is a deficient number, since it is larger than the sum of its proper divisors (1).

143947469 is an equidigital number, since it uses as much as digits as its factorization.

143947469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 143947469 is about 11997.8110086799. The cubic root of 143947469 is about 524.0845349019.

The spelling of 143947469 in words is "one hundred forty-three million, nine hundred forty-seven thousand, four hundred sixty-nine".