38688401 has 2 divisors, whose sum is σ = 38688402. Its totient is φ = 38688400.

The previous prime is 38688367. The next prime is 38688409. The reversal of 38688401 is 10488683.

It is a Cunningham number, because it is equal to 6220²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38688400 + 1 = 6220^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 38688401 - 2⁶ = 38688337 is a prime.

It is not a weakly prime, because it can be changed into another prime (38688409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19344200 + 19344201.

It is an arithmetic number, because the mean of its divisors is an integer number (19344201).

Almost surely, 2^38688401 is an apocalyptic number.

It is an amenable number.

38688401 is a deficient number, since it is larger than the sum of its proper divisors (1).

38688401 is an equidigital number, since it uses as much as digits as its factorization.

38688401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 38688401 is about 6220.0000803859. Note that the first 4 decimals coincide. The cubic root of 38688401 is about 338.2155674699.

The spelling of 38688401 in words is "thirty-eight million, six hundred eighty-eight thousand, four hundred one".