549398469 has 16 divisors (see below), whose sum is σ = 785445120. Its totient is φ = 340354560.

The previous prime is 549398467. The next prime is 549398491. The reversal of 549398469 is 964893945.

It is a happy number.

It is not a de Polignac number, because 549398469 - 2¹ = 549398467 is a prime.

It is a super-2 number, since 2×549398469² = 603677355479087922, 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 (549398467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64152 + ... + 72209.

It is an arithmetic number, because the mean of its divisors is an integer number (49090320).

Almost surely, 2^549398469 is an apocalyptic number.

It is an amenable number.

549398469 is a deficient number, since it is larger than the sum of its proper divisors (236046651).

549398469 is a wasteful number, since it uses less digits than its factorization.

549398469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136460.

The product of its digits is 8398080, while the sum is 57.

The square root of 549398469 is about 23439.2506066214. The cubic root of 549398469 is about 819.0224664025.

The spelling of 549398469 in words is "five hundred forty-nine million, three hundred ninety-eight thousand, four hundred sixty-nine".