400806430 has 8 divisors (see below), whose sum is σ = 721451592. Its totient is φ = 160322568.

The previous prime is 400806389. The next prime is 400806443. The reversal of 400806430 is 34608004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 400806395 and 400806404.

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 3 ways as a sum of consecutive naturals, for example, 20040312 + ... + 20040331.

It is an arithmetic number, because the mean of its divisors is an integer number (90181449).

Almost surely, 2^400806430 is an apocalyptic number.

400806430 is a deficient number, since it is larger than the sum of its proper divisors (320645162).

400806430 is a wasteful number, since it uses less digits than its factorization.

400806430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40080650.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 400806430 is about 20020.1505988342. The cubic root of 400806430 is about 737.3011195992.

The spelling of 400806430 in words is "four hundred million, eight hundred six thousand, four hundred thirty".