38540401 has 4 divisors (see below), whose sum is σ = 38566132. Its totient is φ = 38514672.

The previous prime is 38540389. The next prime is 38540413. The reversal of 38540401 is 10404583.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (38540389) and next prime (38540413).

It can be written as a sum of positive squares in 2 ways, for example, as 12285025 + 26255376 = 3505^2 + 5124^2 .

It is a cyclic number.

It is not a de Polignac number, because 38540401 - 2¹⁹ = 38016113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38540431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10470 + ... + 13663.

It is an arithmetic number, because the mean of its divisors is an integer number (9641533).

Almost surely, 2^38540401 is an apocalyptic number.

It is an amenable number.

38540401 is a deficient number, since it is larger than the sum of its proper divisors (25731).

38540401 is a wasteful number, since it uses less digits than its factorization.

38540401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25730.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 38540401 is about 6208.0915747112. The cubic root of 38540401 is about 337.7837423643.

Adding to 38540401 its reverse (10404583), we get a palindrome (48944984).

The spelling of 38540401 in words is "thirty-eight million, five hundred forty thousand, four hundred one".