38646997 has 2 divisors, whose sum is σ = 38646998. Its totient is φ = 38646996.

The previous prime is 38646991. The next prime is 38647027. The reversal of 38646997 is 79964683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33802596 + 4844401 = 5814^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 38646997 - 2¹⁵ = 38614229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38646991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19323498 + 19323499.

It is an arithmetic number, because the mean of its divisors is an integer number (19323499).

Almost surely, 2^38646997 is an apocalyptic number.

It is an amenable number.

38646997 is a deficient number, since it is larger than the sum of its proper divisors (1).

38646997 is an equidigital number, since it uses as much as digits as its factorization.

38646997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The square root of 38646997 is about 6216.6708936536. The cubic root of 38646997 is about 338.0948725894.

The spelling of 38646997 in words is "thirty-eight million, six hundred forty-six thousand, nine hundred ninety-seven".