47442649 has 2 divisors, whose sum is σ = 47442650. Its totient is φ = 47442648.

The previous prime is 47442613. The next prime is 47442673. The reversal of 47442649 is 94624474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44355600 + 3087049 = 6660^2 + 1757^2 .

It is a cyclic number.

It is not a de Polignac number, because 47442649 - 2⁹ = 47442137 is a prime.

It is not a weakly prime, because it can be changed into another prime (47442149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23721324 + 23721325.

It is an arithmetic number, because the mean of its divisors is an integer number (23721325).

Almost surely, 2^47442649 is an apocalyptic number.

It is an amenable number.

47442649 is a deficient number, since it is larger than the sum of its proper divisors (1).

47442649 is an equidigital number, since it uses as much as digits as its factorization.

47442649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 40.

The square root of 47442649 is about 6887.8624405544. The cubic root of 47442649 is about 362.0120082908.

The spelling of 47442649 in words is "forty-seven million, four hundred forty-two thousand, six hundred forty-nine".