400446352004 has 6 divisors (see below), whose sum is σ = 700781116014. Its totient is φ = 200223176000.

The previous prime is 400446351989. The next prime is 400446352021. The reversal of 400446352004 is 400253644004.

It can be written as a sum of positive squares in only one way, i.e., 395512694404 + 4933657600 = 628898^2 + 70240^2 .

It is a super-2 number, since 2×400446352004² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055793997 + ... + 50055794004.

It is an arithmetic number, because the mean of its divisors is an integer number (116796852669).

Almost surely, 2^400446352004 is an apocalyptic number.

It is an amenable number.

400446352004 is a deficient number, since it is larger than the sum of its proper divisors (300334764010).

400446352004 is a wasteful number, since it uses less digits than its factorization.

400446352004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100111588005 (or 100111588003 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 400446352004 its reverse (400253644004), we get a palindrome (800699996008).

The spelling of 400446352004 in words is "four hundred billion, four hundred forty-six million, three hundred fifty-two thousand, four".