398296045449 has 15 divisors (see below), whose sum is σ = 594993935613. Its totient is φ = 265526910324.

The previous prime is 398296045439. The next prime is 398296045453. The reversal of 398296045449 is 944540692893.

The square root of 398296045449 is 631107.

It is a perfect power (a square), and thus also a powerful number.

398296045449 is a `hidden beast` number, since 3 + 9 + 8 + 29 + 60 + 4 + 544 + 9 = 666.

It is not a de Polignac number, because 398296045449 - 2⁵ = 398296045417 is a prime.

It is a super-2 number, since 2×398296045449² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (398296045439) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5644902 + ... + 5715024.

Almost surely, 2^398296045449 is an apocalyptic number.

398296045449 is the 631107-th square number.

398296045449 is the 315554-th centered octagonal number.

It is an amenable number.

398296045449 is a deficient number, since it is larger than the sum of its proper divisors (196697890164).

398296045449 is an frugal number, since it uses more digits than its factorization.

398296045449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140258 (or 70126 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 63.

The spelling of 398296045449 in words is "three hundred ninety-eight billion, two hundred ninety-six million, forty-five thousand, four hundred forty-nine".