129054349439 has 8 divisors (see below), whose sum is σ = 135858017280. Its totient is φ = 122251815000.

The previous prime is 129054349427. The next prime is 129054349441. The reversal of 129054349439 is 934943450921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129054349439 is a prime.

It is a super-2 number, since 2×129054349439² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129054349409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44447 + ... + 509984.

It is an arithmetic number, because the mean of its divisors is an integer number (16982252160).

Almost surely, 2^129054349439 is an apocalyptic number.

129054349439 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

129054349439 is a deficient number, since it is larger than the sum of its proper divisors (6803667841).

129054349439 is a wasteful number, since it uses less digits than its factorization.

129054349439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566701.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 129054349439 in words is "one hundred twenty-nine billion, fifty-four million, three hundred forty-nine thousand, four hundred thirty-nine".