988401 has 8 divisors (see below), whose sum is σ = 1322464. Its totient is φ = 656640.

The previous prime is 988367. The next prime is 988409. The reversal of 988401 is 104889.

It is a happy number.

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

It is not a de Polignac number, because 988401 - 2¹⁴ = 972017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (988409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1425 + ... + 2001.

It is an arithmetic number, because the mean of its divisors is an integer number (165308).

2⁹⁸⁸⁴⁰¹ is an apocalyptic number.

It is an amenable number.

988401 is a deficient number, since it is larger than the sum of its proper divisors (334063).

988401 is a wasteful number, since it uses less digits than its factorization.

988401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 988401 is about 994.1835846563. The cubic root of 988401 is about 99.6118621055.

It can be divided in two parts, 9 and 88401, that added together give a triangular number (88410 = T₄₂₀).

The spelling of 988401 in words is "nine hundred eighty-eight thousand, four hundred one".