400900030 has 16 divisors (see below), whose sum is σ = 729061200. Its totient is φ = 158706432.

The previous prime is 400899937. The next prime is 400900037. The reversal of 400900030 is 30009004.

It is a junction number, because it is equal to n+sod(n) for n = 400899977 and 400900013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400900037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205680 + ... + 207619.

It is an arithmetic number, because the mean of its divisors is an integer number (45566325).

Almost surely, 2^400900030 is an apocalyptic number.

400900030 is a deficient number, since it is larger than the sum of its proper divisors (328161170).

400900030 is a wasteful number, since it uses less digits than its factorization.

400900030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413403.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 400900030 is about 20022.4881071259. The cubic root of 400900030 is about 737.3585089092.

Adding to 400900030 its reverse (30009004), we get a palindrome (430909034).

The spelling of 400900030 in words is "four hundred million, nine hundred thousand, thirty".