400244245 has 16 divisors (see below), whose sum is σ = 494081280. Its totient is φ = 311102784.

The previous prime is 400244239. The next prime is 400244261. The reversal of 400244245 is 542442004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400244245 - 2¹¹ = 400242197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26539 + ... + 38791.

It is an arithmetic number, because the mean of its divisors is an integer number (30880080).

Almost surely, 2^400244245 is an apocalyptic number.

It is an amenable number.

400244245 is a deficient number, since it is larger than the sum of its proper divisors (93837035).

400244245 is a wasteful number, since it uses less digits than its factorization.

400244245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12444.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 400244245 is about 20006.1051931654. The cubic root of 400244245 is about 736.9562369266.

Adding to 400244245 its reverse (542442004), we get a palindrome (942686249).

The spelling of 400244245 in words is "four hundred million, two hundred forty-four thousand, two hundred forty-five".