945945947 has 4 divisors (see below), whose sum is σ = 946715616. Its totient is φ = 945176280.

The previous prime is 945945941. The next prime is 945946007. The reversal of 945945947 is 749549549.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 945945947 - 2²⁴ = 929168731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 945945892 and 945945901.

It is not an unprimeable number, because it can be changed into a prime (945945941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382988 + ... + 385449.

It is an arithmetic number, because the mean of its divisors is an integer number (236678904).

Almost surely, 2^945945947 is an apocalyptic number.

945945947 is a deficient number, since it is larger than the sum of its proper divisors (769669).

945945947 is a wasteful number, since it uses less digits than its factorization.

945945947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769668.

The product of its digits is 8164800, while the sum is 56.

The square root of 945945947 is about 30756.2342785979. The cubic root of 945945947 is about 981.6472182930.

The spelling of 945945947 in words is "nine hundred forty-five million, nine hundred forty-five thousand, nine hundred forty-seven".