129293383 has 2 divisors, whose sum is σ = 129293384. Its totient is φ = 129293382.

The previous prime is 129293371. The next prime is 129293399. The reversal of 129293383 is 383392921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129293383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129293783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64646691 + 64646692.

It is an arithmetic number, because the mean of its divisors is an integer number (64646692).

Almost surely, 2^129293383 is an apocalyptic number.

129293383 is a deficient number, since it is larger than the sum of its proper divisors (1).

129293383 is an equidigital number, since it uses as much as digits as its factorization.

129293383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 129293383 is about 11370.7248229829. The cubic root of 129293383 is about 505.6601933034.

The spelling of 129293383 in words is "one hundred twenty-nine million, two hundred ninety-three thousand, three hundred eighty-three".