39813097 has 2 divisors, whose sum is σ = 39813098. Its totient is φ = 39813096.

The previous prime is 39813071. The next prime is 39813101. The reversal of 39813097 is 79031893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38081241 + 1731856 = 6171^2 + 1316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39813097 is a prime.

It is not a weakly prime, because it can be changed into another prime (39813497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19906548 + 19906549.

It is an arithmetic number, because the mean of its divisors is an integer number (19906549).

Almost surely, 2^39813097 is an apocalyptic number.

It is an amenable number.

39813097 is a deficient number, since it is larger than the sum of its proper divisors (1).

39813097 is an equidigital number, since it uses as much as digits as its factorization.

39813097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 39813097 is about 6309.7620398871. The cubic root of 39813097 is about 341.4616914770.

Subtracting 39813097 from its reverse (79031893), we obtain a triangular number (39218796 = T₈₈₅₆).

The spelling of 39813097 in words is "thirty-nine million, eight hundred thirteen thousand, ninety-seven".