947893489 has 4 divisors (see below), whose sum is σ = 997782640. Its totient is φ = 898004340.

The previous prime is 947893483. The next prime is 947893519. The reversal of 947893489 is 984398749.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947893489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (947893483) 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 3 ways as a sum of consecutive naturals, for example, 24944547 + ... + 24944584.

It is an arithmetic number, because the mean of its divisors is an integer number (249445660).

Almost surely, 2^947893489 is an apocalyptic number.

It is an amenable number.

947893489 is a deficient number, since it is larger than the sum of its proper divisors (49889151).

947893489 is a wasteful number, since it uses less digits than its factorization.

947893489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49889150.

The product of its digits is 15676416, while the sum is 61.

The square root of 947893489 is about 30787.8789298646. The cubic root of 947893489 is about 982.3204381066.

The spelling of 947893489 in words is "nine hundred forty-seven million, eight hundred ninety-three thousand, four hundred eighty-nine".