47776997 has 2 divisors, whose sum is σ = 47776998. Its totient is φ = 47776996.

The previous prime is 47776991. The next prime is 47777011. The reversal of 47776997 is 79967774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33744481 + 14032516 = 5809^2 + 3746^2 .

It is a cyclic number.

It is not a de Polignac number, because 47776997 - 2²⁴ = 30999781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47776991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23888498 + 23888499.

It is an arithmetic number, because the mean of its divisors is an integer number (23888499).

Almost surely, 2^47776997 is an apocalyptic number.

It is an amenable number.

47776997 is a deficient number, since it is larger than the sum of its proper divisors (1).

47776997 is an equidigital number, since it uses as much as digits as its factorization.

47776997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4667544, while the sum is 56.

The square root of 47776997 is about 6912.0906388733. The cubic root of 47776997 is about 362.8604345246.

The spelling of 47776997 in words is "forty-seven million, seven hundred seventy-six thousand, nine hundred ninety-seven".