7963945 has 16 divisors (see below), whose sum is σ = 10975680. Its totient is φ = 5486400.

The previous prime is 7963937. The next prime is 7963961. The reversal of 7963945 is 5493697.

It is not a de Polignac number, because 7963945 - 2³ = 7963937 is a prime.

7963945 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2766 + ... + 4855.

It is an arithmetic number, because the mean of its divisors is an integer number (685980).

Almost surely, 2^7963945 is an apocalyptic number.

It is an amenable number.

7963945 is a deficient number, since it is larger than the sum of its proper divisors (3011735).

7963945 is a wasteful number, since it uses less digits than its factorization.

7963945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7656.

The product of its digits is 204120, while the sum is 43.

The square root of 7963945 is about 2822.0462434198. The cubic root of 7963945 is about 199.6990891570.

The spelling of 7963945 in words is "seven million, nine hundred sixty-three thousand, nine hundred forty-five".