4129453949 has 4 divisors (see below), whose sum is σ = 4230172380. Its totient is φ = 4028735520.

The previous prime is 4129453907. The next prime is 4129454009. The reversal of 4129453949 is 9493549214.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1770894724 + 2358559225 = 42082^2 + 48565^2 .

It is a cyclic number.

It is not a de Polignac number, because 4129453949 - 2¹² = 4129449853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4129453897 and 4129453906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4129453049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50359154 + ... + 50359235.

It is an arithmetic number, because the mean of its divisors is an integer number (1057543095).

Almost surely, 2^4129453949 is an apocalyptic number.

It is an amenable number.

4129453949 is a deficient number, since it is larger than the sum of its proper divisors (100718431).

4129453949 is a wasteful number, since it uses less digits than its factorization.

4129453949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100718430.

The product of its digits is 1399680, while the sum is 50.

The square root of 4129453949 is about 64260.8274845570. The cubic root of 4129453949 is about 1604.3441773449.

The spelling of 4129453949 in words is "four billion, one hundred twenty-nine million, four hundred fifty-three thousand, nine hundred forty-nine".