400030601 has 2 divisors, whose sum is σ = 400030602. Its totient is φ = 400030600.

The previous prime is 400030597. The next prime is 400030637. The reversal of 400030601 is 106030004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399040576 + 990025 = 19976^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 400030601 - 2² = 400030597 is a prime.

It is not a weakly prime, because it can be changed into another prime (400030681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200015300 + 200015301.

It is an arithmetic number, because the mean of its divisors is an integer number (200015301).

Almost surely, 2^400030601 is an apocalyptic number.

It is an amenable number.

400030601 is a deficient number, since it is larger than the sum of its proper divisors (1).

400030601 is an equidigital number, since it uses as much as digits as its factorization.

400030601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 400030601 is about 20000.7650103690. The cubic root of 400030601 is about 736.8250884236.

Adding to 400030601 its reverse (106030004), we get a palindrome (506060605).

The spelling of 400030601 in words is "four hundred million, thirty thousand, six hundred one".