129453914 has 4 divisors (see below), whose sum is σ = 194180874. Its totient is φ = 64726956.

The previous prime is 129453911. The next prime is 129453917. The reversal of 129453914 is 419354921.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (129453911) and next prime (129453917).

It can be written as a sum of positive squares in only one way, i.e., 126675025 + 2778889 = 11255^2 + 1667^2 .

It is not an unprimeable number, because it can be changed into a prime (129453911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32363477 + ... + 32363480.

Almost surely, 2^129453914 is an apocalyptic number.

129453914 is a deficient number, since it is larger than the sum of its proper divisors (64726960).

129453914 is an equidigital number, since it uses as much as digits as its factorization.

129453914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64726959.

The product of its digits is 38880, while the sum is 38.

The square root of 129453914 is about 11377.7815939664. The cubic root of 129453914 is about 505.8693830867.

The spelling of 129453914 in words is "one hundred twenty-nine million, four hundred fifty-three thousand, nine hundred fourteen".