39451096129 has 3 divisors (see below), whose sum is σ = 39451294753. Its totient is φ = 39450897506.

The previous prime is 39451096123. The next prime is 39451096147. The reversal of 39451096129 is 92169015493.

The square root of 39451096129 is 198623.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 39451096129 - 2⁷ = 39451096001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39451096123) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 99312 + ... + 297934.

Almost surely, 2^39451096129 is an apocalyptic number.

39451096129 is the 198623-rd square number.

39451096129 is the 99312-nd centered octagonal number.

It is an amenable number.

39451096129 is a deficient number, since it is larger than the sum of its proper divisors (198624).

39451096129 is an frugal number, since it uses more digits than its factorization.

39451096129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397246 (or 198623 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

Multiplying 39451096129 by its sum of digits (49), we get a square (1933103710321 = 1390361²).

The spelling of 39451096129 in words is "thirty-nine billion, four hundred fifty-one million, ninety-six thousand, one hundred twenty-nine".