47085397 has 2 divisors, whose sum is σ = 47085398. Its totient is φ = 47085396.

The previous prime is 47085331. The next prime is 47085419. The reversal of 47085397 is 79358074.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29495761 + 17589636 = 5431^2 + 4194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47085397 is a prime.

It is a super-2 number, since 2×47085397² = 4434069221295218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47085197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23542698 + 23542699.

It is an arithmetic number, because the mean of its divisors is an integer number (23542699).

Almost surely, 2^47085397 is an apocalyptic number.

It is an amenable number.

47085397 is a deficient number, since it is larger than the sum of its proper divisors (1).

47085397 is an equidigital number, since it uses as much as digits as its factorization.

47085397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 47085397 is about 6861.8799902068. The cubic root of 47085397 is about 361.1010452176.

The spelling of 47085397 in words is "forty-seven million, eighty-five thousand, three hundred ninety-seven".