47749249 has 2 divisors, whose sum is σ = 47749250. Its totient is φ = 47749248.

The previous prime is 47749241. The next prime is 47749253. The reversal of 47749249 is 94294774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25959025 + 21790224 = 5095^2 + 4668^2 .

It is a cyclic number.

It is not a de Polignac number, because 47749249 - 2³ = 47749241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47749199 and 47749208.

It is not a weakly prime, because it can be changed into another prime (47749241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23874624 + 23874625.

It is an arithmetic number, because the mean of its divisors is an integer number (23874625).

Almost surely, 2^47749249 is an apocalyptic number.

It is an amenable number.

47749249 is a deficient number, since it is larger than the sum of its proper divisors (1).

47749249 is an equidigital number, since it uses as much as digits as its factorization.

47749249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 47749249 is about 6910.0831398761. The cubic root of 47749249 is about 362.7901733680.

The spelling of 47749249 in words is "forty-seven million, seven hundred forty-nine thousand, two hundred forty-nine".