420208449 has 4 divisors (see below), whose sum is σ = 560277936. Its totient is φ = 280138964.

The previous prime is 420208417. The next prime is 420208457. The reversal of 420208449 is 944802024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420208449 - 2⁵ = 420208417 is a prime.

It is a super-2 number, since 2×420208449² = 353150281221971202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420208409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70034739 + ... + 70034744.

It is an arithmetic number, because the mean of its divisors is an integer number (140069484).

Almost surely, 2^420208449 is an apocalyptic number.

It is an amenable number.

420208449 is a deficient number, since it is larger than the sum of its proper divisors (140069487).

420208449 is a wasteful number, since it uses less digits than its factorization.

420208449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140069486.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 420208449 is about 20498.9865359242. The cubic root of 420208449 is about 749.0111109265.

The spelling of 420208449 in words is "four hundred twenty million, two hundred eight thousand, four hundred forty-nine".