400038334 has 4 divisors (see below), whose sum is σ = 600057504. Its totient is φ = 200019166.

The previous prime is 400038323. The next prime is 400038343. The reversal of 400038334 is 433830004.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 400038299 and 400038308.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 100009582 + ... + 100009585.

It is an arithmetic number, because the mean of its divisors is an integer number (150014376).

Almost surely, 2^400038334 is an apocalyptic number.

400038334 is a deficient number, since it is larger than the sum of its proper divisors (200019170).

400038334 is a wasteful number, since it uses less digits than its factorization.

400038334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200019169.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 400038334 is about 20000.9583270402. The cubic root of 400038334 is about 736.8298362535.

Adding to 400038334 its reverse (433830004), we get a palindrome (833868338).

The spelling of 400038334 in words is "four hundred million, thirty-eight thousand, three hundred thirty-four".