7904135447 has 8 divisors (see below), whose sum is σ = 8514300816. Its totient is φ = 7294277952.

The previous prime is 7904135411. The next prime is 7904135543. The reversal of 7904135447 is 7445314097.

It is a happy number.

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

It is not a de Polignac number, because 7904135447 - 2¹⁰ = 7904134423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7904135398 and 7904135407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7904135647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22193 + ... + 127674.

It is an arithmetic number, because the mean of its divisors is an integer number (1064287602).

Almost surely, 2^7904135447 is an apocalyptic number.

7904135447 is a deficient number, since it is larger than the sum of its proper divisors (610165369).

7904135447 is a wasteful number, since it uses less digits than its factorization.

7904135447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153937.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 7904135447 is about 88905.2048363874. The cubic root of 7904135447 is about 1991.9791633406.

The spelling of 7904135447 in words is "seven billion, nine hundred four million, one hundred thirty-five thousand, four hundred forty-seven".