915493047 has 16 divisors (see below), whose sum is σ = 1405224192. Its totient is φ = 519318720.

The previous prime is 915493021. The next prime is 915493049. The reversal of 915493047 is 740394519.

915493047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 915493047 - 2⁸ = 915492791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (915493049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156229 + ... + 161982.

It is an arithmetic number, because the mean of its divisors is an integer number (87826512).

Almost surely, 2^915493047 is an apocalyptic number.

915493047 is a deficient number, since it is larger than the sum of its proper divisors (489731145).

915493047 is a wasteful number, since it uses less digits than its factorization.

915493047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318358.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 915493047 is about 30257.1156424402. The cubic root of 915493047 is about 970.9980328916.

It can be divided in two parts, 9154 and 93047, that added together give a palindrome (102201).

The spelling of 915493047 in words is "nine hundred fifteen million, four hundred ninety-three thousand, forty-seven".