7927949 has 4 divisors (see below), whose sum is σ = 7945536. Its totient is φ = 7910364.

The previous prime is 7927943. The next prime is 7927979. The reversal of 7927949 is 9497297.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9497297 = 29 ⋅327493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7927949 is a prime.

It is a d-powerful number, because it can be written as 7² + 9² + 2²¹ + 7⁸ + 9⁴ + 4⁴ + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7927943) 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 3 ways as a sum of consecutive naturals, for example, 8099 + ... + 9024.

It is an arithmetic number, because the mean of its divisors is an integer number (1986384).

Almost surely, 2^7927949 is an apocalyptic number.

It is an amenable number.

7927949 is a deficient number, since it is larger than the sum of its proper divisors (17587).

7927949 is a wasteful number, since it uses less digits than its factorization.

7927949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17586.

The product of its digits is 285768, while the sum is 47.

The square root of 7927949 is about 2815.6613787883. The cubic root of 7927949 is about 199.3977633754.

The spelling of 7927949 in words is "seven million, nine hundred twenty-seven thousand, nine hundred forty-nine".