400004549974 has 4 divisors (see below), whose sum is σ = 600006824964. Its totient is φ = 200002274986.

The previous prime is 400004549963. The next prime is 400004549977. The reversal of 400004549974 is 479945400004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400004549977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100001137492 + ... + 100001137495.

It is an arithmetic number, because the mean of its divisors is an integer number (150001706241).

Almost surely, 2^400004549974 is an apocalyptic number.

400004549974 is a deficient number, since it is larger than the sum of its proper divisors (200002274990).

400004549974 is a wasteful number, since it uses less digits than its factorization.

400004549974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200002274989.

The product of its (nonzero) digits is 725760, while the sum is 46.

Adding to 400004549974 its reverse (479945400004), we get a palindrome (879949949978).

The spelling of 400004549974 in words is "four hundred billion, four million, five hundred forty-nine thousand, nine hundred seventy-four".