47115949 has 4 divisors (see below), whose sum is σ = 48118464. Its totient is φ = 46113436.

The previous prime is 47115889. The next prime is 47115967. The reversal of 47115949 is 94951174.

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: 94951174 = 2 ⋅47475587.

It is a cyclic number.

It is not a de Polignac number, because 47115949 - 2¹⁵ = 47083181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47115979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501187 + ... + 501280.

It is an arithmetic number, because the mean of its divisors is an integer number (12029616).

Almost surely, 2^47115949 is an apocalyptic number.

It is an amenable number.

47115949 is a deficient number, since it is larger than the sum of its proper divisors (1002515).

47115949 is a wasteful number, since it uses less digits than its factorization.

47115949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002514.

The product of its digits is 45360, while the sum is 40.

The square root of 47115949 is about 6864.1058412586. The cubic root of 47115949 is about 361.1791301054.

The spelling of 47115949 in words is "forty-seven million, one hundred fifteen thousand, nine hundred forty-nine".