38997197 has 2 divisors, whose sum is σ = 38997198. Its totient is φ = 38997196.

The previous prime is 38997193. The next prime is 38997209. The reversal of 38997197 is 79179983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37625956 + 1371241 = 6134^2 + 1171^2 .

It is a cyclic number.

It is not a de Polignac number, because 38997197 - 2² = 38997193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38997193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19498598 + 19498599.

It is an arithmetic number, because the mean of its divisors is an integer number (19498599).

Almost surely, 2^38997197 is an apocalyptic number.

It is an amenable number.

38997197 is a deficient number, since it is larger than the sum of its proper divisors (1).

38997197 is an equidigital number, since it uses as much as digits as its factorization.

38997197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 53.

The square root of 38997197 is about 6244.7735747583. The cubic root of 38997197 is about 339.1130196917.

The spelling of 38997197 in words is "thirty-eight million, nine hundred ninety-seven thousand, one hundred ninety-seven".