400048898 has 6 divisors (see below), whose sum is σ = 600115779. Its totient is φ = 200010306.

The previous prime is 400048897. The next prime is 400048907. The reversal of 400048898 is 898840004.

It can be written as a sum of positive squares in only one way, i.e., 200024449 + 200024449 = 14143^2 + 14143^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=14143.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400048897) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 21215 + ... + 35357.

Almost surely, 2^400048898 is an apocalyptic number.

400048898 is a deficient number, since it is larger than the sum of its proper divisors (200066881).

400048898 is an frugal number, since it uses more digits than its factorization.

400048898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28288 (or 14145 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 400048898 is about 20001.2224126427. Note that the first 3 decimals coincide. The cubic root of 400048898 is about 736.8363221335.

Multiplying 400048898 by its product of nonzero digits (73728), we get a square (29494805151744 = 5430912²).

The spelling of 400048898 in words is "four hundred million, forty-eight thousand, eight hundred ninety-eight".