406489554 has 12 divisors (see below), whose sum is σ = 880727406. Its totient is φ = 135496512.

The previous prime is 406489541. The next prime is 406489561. The reversal of 406489554 is 455984604.

It can be written as a sum of positive squares in only one way, i.e., 389075625 + 17413929 = 19725^2 + 4173^2 .

It is a super-2 number, since 2×406489554² = 330467515022237832, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11291359 + ... + 11291394.

Almost surely, 2^406489554 is an apocalyptic number.

406489554 is an abundant number, since it is smaller than the sum of its proper divisors (474237852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406489554 is a wasteful number, since it uses less digits than its factorization.

406489554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22582761 (or 22582758 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 406489554 is about 20161.5860983207. The cubic root of 406489554 is about 740.7695634273.

The spelling of 406489554 in words is "four hundred six million, four hundred eighty-nine thousand, five hundred fifty-four".