400886742 has 8 divisors (see below), whose sum is σ = 801773496. Its totient is φ = 133628912.

The previous prime is 400886701. The next prime is 400886743. The reversal of 400886742 is 247688004.

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

400886742 is an admirable number.

It is a super-2 number, since 2×400886742² = 321420359822749128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400886742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400886743) by changing a digit.

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, 33407223 + ... + 33407234.

It is an arithmetic number, because the mean of its divisors is an integer number (100221687).

Almost surely, 2^400886742 is an apocalyptic number.

400886742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

400886742 is a wasteful number, since it uses less digits than its factorization.

400886742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66814462.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 400886742 is about 20022.1562774842. The cubic root of 400886742 is about 737.3503621333.

The spelling of 400886742 in words is "four hundred million, eight hundred eighty-six thousand, seven hundred forty-two".