453778349 has 4 divisors (see below), whose sum is σ = 477661440. Its totient is φ = 429895260.

The previous prime is 453778343. The next prime is 453778363. The reversal of 453778349 is 943877354.

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 a de Polignac number, because none of the positive numbers 2^k-453778349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 453778297 and 453778306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453778343) 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, 11941517 + ... + 11941554.

It is an arithmetic number, because the mean of its divisors is an integer number (119415360).

Almost surely, 2^453778349 is an apocalyptic number.

It is an amenable number.

453778349 is a deficient number, since it is larger than the sum of its proper divisors (23883091).

453778349 is a wasteful number, since it uses less digits than its factorization.

453778349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23883090.

The product of its digits is 2540160, while the sum is 50.

The square root of 453778349 is about 21302.0738192318. The cubic root of 453778349 is about 768.4481868615.

The spelling of 453778349 in words is "four hundred fifty-three million, seven hundred seventy-eight thousand, three hundred forty-nine".