47923949 has 4 divisors (see below), whose sum is σ = 47942364. Its totient is φ = 47905536.

The previous prime is 47923933. The next prime is 47924011. The reversal of 47923949 is 94932974.

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 29920900 + 18003049 = 5470^2 + 4243^2 .

It is a cyclic number.

It is not a de Polignac number, because 47923949 - 2⁴ = 47923933 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 (47929949) 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, 4502 + ... + 10775.

It is an arithmetic number, because the mean of its divisors is an integer number (11985591).

Almost surely, 2^47923949 is an apocalyptic number.

It is an amenable number.

47923949 is a deficient number, since it is larger than the sum of its proper divisors (18415).

47923949 is a wasteful number, since it uses less digits than its factorization.

47923949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18414.

The product of its digits is 489888, while the sum is 47.

The square root of 47923949 is about 6922.7125463939. The cubic root of 47923949 is about 363.2320812232.

The spelling of 47923949 in words is "forty-seven million, nine hundred twenty-three thousand, nine hundred forty-nine".