400898 has 8 divisors (see below), whose sum is σ = 616140. Its totient is φ = 195520.

The previous prime is 400871. The next prime is 400903. The reversal of 400898 is 898004.

It can be written as a sum of positive squares in 2 ways, for example, as 388129 + 12769 = 623^2 + 113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 400898.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2363 + ... + 2526.

2⁴⁰⁰⁸⁹⁸ is an apocalyptic number.

400898 is a deficient number, since it is larger than the sum of its proper divisors (215242).

400898 is a wasteful number, since it uses less digits than its factorization.

400898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 400898 is about 633.1650653661. The cubic root of 400898 is about 73.7357264343.

The spelling of 400898 in words is "four hundred thousand, eight hundred ninety-eight".