400626822 has 16 divisors (see below), whose sum is σ = 828883440. Its totient is φ = 128937312.

The previous prime is 400626817. The next prime is 400626823. The reversal of 400626822 is 228626004.

It is a self number, because there is not a number n which added to its sum of digits gives 400626822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400626823) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1151053 + ... + 1151400.

It is an arithmetic number, because the mean of its divisors is an integer number (51805215).

Almost surely, 2^400626822 is an apocalyptic number.

400626822 is an abundant number, since it is smaller than the sum of its proper divisors (428256618).

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

400626822 is a wasteful number, since it uses less digits than its factorization.

400626822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302487.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 400626822 is about 20015.6644156521. The cubic root of 400626822 is about 737.1909708631.

The spelling of 400626822 in words is "four hundred million, six hundred twenty-six thousand, eight hundred twenty-two".