400047874 has 4 divisors (see below), whose sum is σ = 600071814. Its totient is φ = 200023936.

The previous prime is 400047797. The next prime is 400047883. The reversal of 400047874 is 478740004.

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

It can be written as a sum of positive squares in only one way, i.e., 374616025 + 25431849 = 19355^2 + 5043^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100011967 + ... + 100011970.

Almost surely, 2^400047874 is an apocalyptic number.

400047874 is a deficient number, since it is larger than the sum of its proper divisors (200023940).

400047874 is a wasteful number, since it uses less digits than its factorization.

400047874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200023939.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 400047874 is about 20001.1968141909. The cubic root of 400047874 is about 736.8356934428.

Adding to 400047874 its reverse (478740004), we get a palindrome (878787878).

The spelling of 400047874 in words is "four hundred million, forty-seven thousand, eight hundred seventy-four".