39197047 has 2 divisors, whose sum is σ = 39197048. Its totient is φ = 39197046.

The previous prime is 39197017. The next prime is 39197069. The reversal of 39197047 is 74079193.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39197047 - 2¹⁹ = 38672759 is a prime.

It is equal to p_2387677 and since 39197047 and 2387677 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39197017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19598523 + 19598524.

It is an arithmetic number, because the mean of its divisors is an integer number (19598524).

Almost surely, 2^39197047 is an apocalyptic number.

39197047 is a deficient number, since it is larger than the sum of its proper divisors (1).

39197047 is an equidigital number, since it uses as much as digits as its factorization.

39197047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 39197047 is about 6260.7545072459. The cubic root of 39197047 is about 339.6913201860.

The spelling of 39197047 in words is "thirty-nine million, one hundred ninety-seven thousand, forty-seven".