1494399217 has 4 divisors (see below), whose sum is σ = 1559373120. Its totient is φ = 1429425316.

The previous prime is 1494399199. The next prime is 1494399227. The reversal of 1494399217 is 7129934941.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7129934941 = 21377 ⋅333533.

It is a cyclic number.

It is not a de Polignac number, because 1494399217 - 2²⁷ = 1360181489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1494399227) 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, 32486917 + ... + 32486962.

It is an arithmetic number, because the mean of its divisors is an integer number (389843280).

Almost surely, 2^1494399217 is an apocalyptic number.

It is an amenable number.

1494399217 is a deficient number, since it is larger than the sum of its proper divisors (64973903).

1494399217 is an equidigital number, since it uses as much as digits as its factorization.

1494399217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64973902.

The product of its digits is 489888, while the sum is 49.

The square root of 1494399217 is about 38657.4600433086. The cubic root of 1494399217 is about 1143.2877331576.

The spelling of 1494399217 in words is "one billion, four hundred ninety-four million, three hundred ninety-nine thousand, two hundred seventeen".