129493547 has 2 divisors, whose sum is σ = 129493548. Its totient is φ = 129493546.

The previous prime is 129493499. The next prime is 129493577. The reversal of 129493547 is 745394921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129493547 - 2¹⁰ = 129492523 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 129493498 and 129493507.

It is not a weakly prime, because it can be changed into another prime (129493577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64746773 + 64746774.

It is an arithmetic number, because the mean of its divisors is an integer number (64746774).

Almost surely, 2^129493547 is an apocalyptic number.

129493547 is a deficient number, since it is larger than the sum of its proper divisors (1).

129493547 is an equidigital number, since it uses as much as digits as its factorization.

129493547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 129493547 is about 11379.5231446665. The cubic root of 129493547 is about 505.9210026810.

The spelling of 129493547 in words is "one hundred twenty-nine million, four hundred ninety-three thousand, five hundred forty-seven".