554401989 has 40 divisors (see below), whose sum is σ = 854333568. Its totient is φ = 358093440.

The previous prime is 554401963. The next prime is 554401997. The reversal of 554401989 is 989104455.

554401989 is a `hidden beast` number, since 554 + 4 + 0 + 1 + 98 + 9 = 666.

It is not a de Polignac number, because 554401989 - 2²⁰ = 553353413 is a prime.

It is a super-2 number, since 2×554401989² = 614723130814312242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554401949) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 406669 + ... + 408029.

Almost surely, 2^554401989 is an apocalyptic number.

It is an amenable number.

554401989 is a deficient number, since it is larger than the sum of its proper divisors (299931579).

554401989 is a wasteful number, since it uses less digits than its factorization.

554401989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 554401989 is about 23545.7424813914. The cubic root of 554401989 is about 821.5013092157.

It can be divided in two parts, 55 and 4401989, that added together give a palindrome (4402044).

The spelling of 554401989 in words is "five hundred fifty-four million, four hundred one thousand, nine hundred eighty-nine".