7548949 has 4 divisors (see below), whose sum is σ = 7691436. Its totient is φ = 7406464.

The previous prime is 7548941. The next prime is 7548953. The reversal of 7548949 is 9498457.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5726449 + 1822500 = 2393^2 + 1350^2 .

It is a cyclic number.

It is not a de Polignac number, because 7548949 - 2³ = 7548941 is a prime.

It is a Duffinian number.

7548949 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7548899 and 7548908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7548941) 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, 71164 + ... + 71269.

It is an arithmetic number, because the mean of its divisors is an integer number (1922859).

Almost surely, 2^7548949 is an apocalyptic number.

It is an amenable number.

7548949 is a deficient number, since it is larger than the sum of its proper divisors (142487).

7548949 is a wasteful number, since it uses less digits than its factorization.

7548949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142486.

The product of its digits is 362880, while the sum is 46.

The square root of 7548949 is about 2747.5350771191. The cubic root of 7548949 is about 196.1683008818.

The spelling of 7548949 in words is "seven million, five hundred forty-eight thousand, nine hundred forty-nine".