400986208 has 120 divisors (see below), whose sum is σ = 978310872. Its totient is φ = 161215488.

The previous prime is 400986199. The next prime is 400986217. The reversal of 400986208 is 802689004.

It is an interprime number because it is at equal distance from previous prime (400986199) and next prime (400986217).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1305991 + ... + 1306297.

Almost surely, 2^400986208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400986208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489155436).

400986208 is an abundant number, since it is smaller than the sum of its proper divisors (577324664).

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

400986208 is an equidigital number, since it uses as much as digits as its factorization.

400986208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 400986208 is about 20024.6400217332. The cubic root of 400986208 is about 737.4113396435.

The spelling of 400986208 in words is "four hundred million, nine hundred eighty-six thousand, two hundred eight".