47144429 has 2 divisors, whose sum is σ = 47144430. Its totient is φ = 47144428.

The previous prime is 47144413. The next prime is 47144443. The reversal of 47144429 is 92444174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26030404 + 21114025 = 5102^2 + 4595^2 .

It is a cyclic number.

It is not a de Polignac number, because 47144429 - 2⁴ = 47144413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47144479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23572214 + 23572215.

It is an arithmetic number, because the mean of its divisors is an integer number (23572215).

Almost surely, 2^47144429 is an apocalyptic number.

It is an amenable number.

47144429 is a deficient number, since it is larger than the sum of its proper divisors (1).

47144429 is an equidigital number, since it uses as much as digits as its factorization.

47144429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 47144429 is about 6866.1800879383. The cubic root of 47144429 is about 361.2518889761.

The spelling of 47144429 in words is "forty-seven million, one hundred forty-four thousand, four hundred twenty-nine".