7923649 has 8 divisors (see below), whose sum is σ = 8443008. Its totient is φ = 7410240.

The previous prime is 7923647. The next prime is 7923667. The reversal of 7923649 is 9463297.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7923649 - 2¹ = 7923647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7923647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1444 + ... + 4234.

It is an arithmetic number, because the mean of its divisors is an integer number (1055376).

Almost surely, 2^7923649 is an apocalyptic number.

It is an amenable number.

7923649 is a deficient number, since it is larger than the sum of its proper divisors (519359).

7923649 is a wasteful number, since it uses less digits than its factorization.

7923649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975.

The product of its digits is 81648, while the sum is 40.

The square root of 7923649 is about 2814.8976890821. The cubic root of 7923649 is about 199.3617067424.

The spelling of 7923649 in words is "seven million, nine hundred twenty-three thousand, six hundred forty-nine".