15485393947 has 8 divisors (see below), whose sum is σ = 15986536832. Its totient is φ = 14984352000.

The previous prime is 15485393923. The next prime is 15485393969. The reversal of 15485393947 is 74939358451.

It is a happy number.

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-15485393947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15485393891 and 15485393900.

It is not an unprimeable number, because it can be changed into a prime (15485393047) 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, 401197 + ... + 438097.

It is an arithmetic number, because the mean of its divisors is an integer number (1998317104).

Almost surely, 2^15485393947 is an apocalyptic number.

15485393947 is a deficient number, since it is larger than the sum of its proper divisors (501142885).

15485393947 is a wasteful number, since it uses less digits than its factorization.

15485393947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50469.

The product of its digits is 16329600, while the sum is 58.

The spelling of 15485393947 in words is "fifteen billion, four hundred eighty-five million, three hundred ninety-three thousand, nine hundred forty-seven".