453990349 has 2 divisors, whose sum is σ = 453990350. Its totient is φ = 453990348.

The previous prime is 453990347. The next prime is 453990367. The reversal of 453990349 is 943099354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235837449 + 218152900 = 15357^2 + 14770^2 .

It is a cyclic number.

It is not a de Polignac number, because 453990349 - 2¹ = 453990347 is a prime.

It is a super-2 number, since 2×453990349² = 412214473970283602, which contains 22 as substring.

Together with 453990347, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 453990299 and 453990308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (453990347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226995174 + 226995175.

It is an arithmetic number, because the mean of its divisors is an integer number (226995175).

Almost surely, 2^453990349 is an apocalyptic number.

It is an amenable number.

453990349 is a deficient number, since it is larger than the sum of its proper divisors (1).

453990349 is an equidigital number, since it uses as much as digits as its factorization.

453990349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 46.

The square root of 453990349 is about 21307.0492795225. The cubic root of 453990349 is about 768.5678382673.

The spelling of 453990349 in words is "four hundred fifty-three million, nine hundred ninety thousand, three hundred forty-nine".