400003734 has 24 divisors (see below), whose sum is σ = 866282472. Its totient is φ = 123077760.

The previous prime is 400003729. The next prime is 400003739. The reversal of 400003734 is 437300004.

It is an interprime number because it is at equal distance from previous prime (400003729) and next prime (400003739).

It is a self number, because there is not a number n which added to its sum of digits gives 400003734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400003739) 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 11 ways as a sum of consecutive naturals, for example, 196227 + ... + 198254.

It is an arithmetic number, because the mean of its divisors is an integer number (36095103).

Almost surely, 2^400003734 is an apocalyptic number.

400003734 is an abundant number, since it is smaller than the sum of its proper divisors (466278738).

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

400003734 is a wasteful number, since it uses less digits than its factorization.

400003734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394512 (or 394499 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 400003734 is about 20000.0933497821. The cubic root of 400003734 is about 736.8085924165.

Adding to 400003734 its reverse (437300004), we get a palindrome (837303738).

It can be divided in two parts, 40000 and 3734, that added together give a palindrome (43734).

The spelling of 400003734 in words is "four hundred million, three thousand, seven hundred thirty-four".