47873149 has 2 divisors, whose sum is σ = 47873150. Its totient is φ = 47873148.

The previous prime is 47873107. The next prime is 47873183. The reversal of 47873149 is 94137874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47361924 + 511225 = 6882^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 47873149 - 2²³ = 39484541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47073149) 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 as a sum of consecutive naturals, namely, 23936574 + 23936575.

It is an arithmetic number, because the mean of its divisors is an integer number (23936575).

Almost surely, 2^47873149 is an apocalyptic number.

It is an amenable number.

47873149 is a deficient number, since it is larger than the sum of its proper divisors (1).

47873149 is an equidigital number, since it uses as much as digits as its factorization.

47873149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 47873149 is about 6919.0424915591. The cubic root of 47873149 is about 363.1036922945.

The spelling of 47873149 in words is "forty-seven million, eight hundred seventy-three thousand, one hundred forty-nine".