400352006 has 16 divisors (see below), whose sum is σ = 640866816. Its totient is φ = 186915456.

The previous prime is 400351999. The next prime is 400352009. The reversal of 400352006 is 600253004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400352009) 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, 42041 + ... + 50676.

It is an arithmetic number, because the mean of its divisors is an integer number (40054176).

Almost surely, 2^400352006 is an apocalyptic number.

400352006 is a deficient number, since it is larger than the sum of its proper divisors (240514810).

400352006 is a wasteful number, since it uses less digits than its factorization.

400352006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92863.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 400352006 is about 20008.7982147854. The cubic root of 400352006 is about 737.0223698908.

The spelling of 400352006 in words is "four hundred million, three hundred fifty-two thousand, six".