451949797 has 4 divisors (see below), whose sum is σ = 486715180. Its totient is φ = 417184416.

The previous prime is 451949779. The next prime is 451949801. The reversal of 451949797 is 797949154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 281098756 + 170851041 = 16766^2 + 13071^2 .

It is a cyclic number.

It is not a de Polignac number, because 451949797 - 2¹⁵ = 451917029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451941797) 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, 17382672 + ... + 17382697.

It is an arithmetic number, because the mean of its divisors is an integer number (121678795).

Almost surely, 2^451949797 is an apocalyptic number.

It is an amenable number.

451949797 is a deficient number, since it is larger than the sum of its proper divisors (34765383).

451949797 is a wasteful number, since it uses less digits than its factorization.

451949797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34765382.

The product of its digits is 2857680, while the sum is 55.

The square root of 451949797 is about 21259.1109174396. The cubic root of 451949797 is about 767.4146138922.

The spelling of 451949797 in words is "four hundred fifty-one million, nine hundred forty-nine thousand, seven hundred ninety-seven".