400794030 has 144 divisors (see below), whose sum is σ = 1305630144. Its totient is φ = 84551040.

The previous prime is 400794001. The next prime is 400794041. The reversal of 400794030 is 30497004.

It is a junction number, because it is equal to n+sod(n) for n = 400793985 and 400794003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 53835 + ... + 60825.

It is an arithmetic number, because the mean of its divisors is an integer number (9066876).

Almost surely, 2^400794030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400794030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652815072).

400794030 is an abundant number, since it is smaller than the sum of its proper divisors (904836114).

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

400794030 is a wasteful number, since it uses less digits than its factorization.

400794030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031 (or 7021 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 400794030 is about 20019.8409084588. The cubic root of 400794030 is about 737.2935160716.

It can be divided in two parts, 400 and 794030, that added together give a triangular number (794430 = T₁₂₆₀).

The spelling of 400794030 in words is "four hundred million, seven hundred ninety-four thousand, thirty".