1454240209 has 2 divisors, whose sum is σ = 1454240210. Its totient is φ = 1454240208.

The previous prime is 1454240189. The next prime is 1454240233. The reversal of 1454240209 is 9020424541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1391513809 + 62726400 = 37303^2 + 7920^2 .

It is an emirp because it is prime and its reverse (9020424541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1454240209 - 2¹⁵ = 1454207441 is a prime.

It is a super-2 number, since 2×1454240209² = 4229629170944727362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1454240269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727120104 + 727120105.

It is an arithmetic number, because the mean of its divisors is an integer number (727120105).

Almost surely, 2^1454240209 is an apocalyptic number.

It is an amenable number.

1454240209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1454240209 is an equidigital number, since it uses as much as digits as its factorization.

1454240209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1454240209 is about 38134.5015569890. The cubic root of 1454240209 is about 1132.9534063211.

The spelling of 1454240209 in words is "one billion, four hundred fifty-four million, two hundred forty thousand, two hundred nine".