47994649 has 2 divisors, whose sum is σ = 47994650. Its totient is φ = 47994648.

The previous prime is 47994647. The next prime is 47994673. The reversal of 47994649 is 94649974.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 1140624 = 6845^2 + 1068^2 .

It is a cyclic number.

It is not a de Polignac number, because 47994649 - 2¹ = 47994647 is a prime.

Together with 47994647, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 47994596 and 47994605.

It is not a weakly prime, because it can be changed into another prime (47994643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23997324 + 23997325.

It is an arithmetic number, because the mean of its divisors is an integer number (23997325).

Almost surely, 2^47994649 is an apocalyptic number.

It is an amenable number.

47994649 is a deficient number, since it is larger than the sum of its proper divisors (1).

47994649 is an equidigital number, since it uses as much as digits as its factorization.

47994649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The square root of 47994649 is about 6927.8170443510. The cubic root of 47994649 is about 363.4106133253.

The spelling of 47994649 in words is "forty-seven million, nine hundred ninety-four thousand, six hundred forty-nine".