400030306 has 16 divisors (see below), whose sum is σ = 674299584. Its totient is φ = 176601744.

The previous prime is 400030303. The next prime is 400030339. The reversal of 400030306 is 603030004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 400030306.

It is not an unprimeable number, because it can be changed into a prime (400030303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333876 + ... + 335071.

It is an arithmetic number, because the mean of its divisors is an integer number (42143724).

Almost surely, 2^400030306 is an apocalyptic number.

400030306 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

400030306 is a deficient number, since it is larger than the sum of its proper divisors (274269278).

400030306 is a wasteful number, since it uses less digits than its factorization.

400030306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668985.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 400030306 is about 20000.7576356497. The cubic root of 400030306 is about 736.8249073013.

The spelling of 400030306 in words is "four hundred million, thirty thousand, three hundred six".