400030968 has 16 divisors (see below), whose sum is σ = 1000077480. Its totient is φ = 133343648.

The previous prime is 400030963. The next prime is 400030979. The reversal of 400030968 is 869030004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400030963) 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, 8333955 + ... + 8334002.

Almost surely, 2^400030968 is an apocalyptic number.

It is an amenable number.

400030968 is an abundant number, since it is smaller than the sum of its proper divisors (600046512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400030968 is a wasteful number, since it uses less digits than its factorization.

400030968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16667966 (or 16667962 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 400030968 is about 20000.7741850159. The cubic root of 400030968 is about 736.8253137520.

The spelling of 400030968 in words is "four hundred million, thirty thousand, nine hundred sixty-eight".