7953947 has 4 divisors (see below), whose sum is σ = 7962840. Its totient is φ = 7945056.

The previous prime is 7953931. The next prime is 7953971. The reversal of 7953947 is 7493597.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7953947 - 2⁴ = 7953931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7953898 and 7953907.

It is not an unprimeable number, because it can be changed into a prime (7953247) 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, 2933 + ... + 4950.

It is an arithmetic number, because the mean of its divisors is an integer number (1990710).

Almost surely, 2^7953947 is an apocalyptic number.

7953947 is the 1508-th centered heptagonal number.

7953947 is a deficient number, since it is larger than the sum of its proper divisors (8893).

7953947 is a wasteful number, since it uses less digits than its factorization.

7953947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8892.

The product of its digits is 238140, while the sum is 44.

The square root of 7953947 is about 2820.2742774418. The cubic root of 7953947 is about 199.6154862195.

The spelling of 7953947 in words is "seven million, nine hundred fifty-three thousand, nine hundred forty-seven".