47619997 has 2 divisors, whose sum is σ = 47619998. Its totient is φ = 47619996.

The previous prime is 47619991. The next prime is 47620007. The reversal of 47619997 is 79991674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41912676 + 5707321 = 6474^2 + 2389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47619997 is a prime.

It is a super-2 number, since 2×47619997² = 4535328228560018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47619991) 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, 23809998 + 23809999.

It is an arithmetic number, because the mean of its divisors is an integer number (23809999).

Almost surely, 2^47619997 is an apocalyptic number.

It is an amenable number.

47619997 is a deficient number, since it is larger than the sum of its proper divisors (1).

47619997 is an equidigital number, since it uses as much as digits as its factorization.

47619997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 52.

The square root of 47619997 is about 6900.7243822660. The cubic root of 47619997 is about 362.4625331075.

The spelling of 47619997 in words is "forty-seven million, six hundred nineteen thousand, nine hundred ninety-seven".