947572087 has 32 divisors (see below), whose sum is σ = 1202033664. Its totient is φ = 725587200.

The previous prime is 947572081. The next prime is 947572091. The reversal of 947572087 is 780275749.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947572087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 947572087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947572081) 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 31 ways as a sum of consecutive naturals, for example, 1244787 + ... + 1245547.

It is an arithmetic number, because the mean of its divisors is an integer number (37563552).

Almost surely, 2^947572087 is an apocalyptic number.

947572087 is a deficient number, since it is larger than the sum of its proper divisors (254461577).

947572087 is a wasteful number, since it uses less digits than its factorization.

947572087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 947572087 is about 30782.6588682654. The cubic root of 947572087 is about 982.2094005102.

The spelling of 947572087 in words is "nine hundred forty-seven million, five hundred seventy-two thousand, eighty-seven".