392040001 has 2 divisors, whose sum is σ = 392040002. Its totient is φ = 392040000.

The previous prime is 392039933. The next prime is 392040017. The reversal of 392040001 is 100040293.

It is a Cunningham number, because it is equal to 19800²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392040000 + 1 = 19800^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 392040001 - 2⁹ = 392039489 is a prime.

It is not a weakly prime, because it can be changed into another prime (392040031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196020000 + 196020001.

It is an arithmetic number, because the mean of its divisors is an integer number (196020001).

Almost surely, 2^392040001 is an apocalyptic number.

It is an amenable number.

392040001 is a deficient number, since it is larger than the sum of its proper divisors (1).

392040001 is an equidigital number, since it uses as much as digits as its factorization.

392040001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 392040001 is about 19800.0000252525. Note that the first 4 decimals coincide. The cubic root of 392040001 is about 731.8860350163.

Adding to 392040001 its reverse (100040293), we get a palindrome (492080294).

The spelling of 392040001 in words is "three hundred ninety-two million, forty thousand, one".