400030963 has 2 divisors, whose sum is σ = 400030964. Its totient is φ = 400030962.

The previous prime is 400030951. The next prime is 400030979. The reversal of 400030963 is 369030004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400030963 - 2⁵ = 400030931 is a prime.

It is not a weakly prime, because it can be changed into another prime (400030993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200015481 + 200015482.

It is an arithmetic number, because the mean of its divisors is an integer number (200015482).

Almost surely, 2^400030963 is an apocalyptic number.

400030963 is a deficient number, since it is larger than the sum of its proper divisors (1).

400030963 is an equidigital number, since it uses as much as digits as its factorization.

400030963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 400030963 is about 20000.7740600208. The cubic root of 400030963 is about 736.8253106821.

Adding to 400030963 its reverse (369030004), we get a palindrome (769060967).

The spelling of 400030963 in words is "four hundred million, thirty thousand, nine hundred sixty-three".