129397364 has 6 divisors (see below), whose sum is σ = 226445394. Its totient is φ = 64698680.

The previous prime is 129397337. The next prime is 129397393. The reversal of 129397364 is 463793921.

It can be written as a sum of positive squares in only one way, i.e., 94090000 + 35307364 = 9700^2 + 5942^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16174667 + ... + 16174674.

It is an arithmetic number, because the mean of its divisors is an integer number (37740899).

Almost surely, 2^129397364 is an apocalyptic number.

It is an amenable number.

129397364 is a deficient number, since it is larger than the sum of its proper divisors (97048030).

129397364 is a wasteful number, since it uses less digits than its factorization.

129397364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32349345 (or 32349343 counting only the distinct ones).

The product of its digits is 244944, while the sum is 44.

The square root of 129397364 is about 11375.2962159233. The cubic root of 129397364 is about 505.7957118750.

The spelling of 129397364 in words is "one hundred twenty-nine million, three hundred ninety-seven thousand, three hundred sixty-four".