1399269273 has 4 divisors (see below), whose sum is σ = 1865692368. Its totient is φ = 932846180.

The previous prime is 1399269257. The next prime is 1399269283. The reversal of 1399269273 is 3729629931.

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: 3729629931 = 3 ⋅1243209977.

It is a cyclic number.

It is not a de Polignac number, because 1399269273 - 2⁴ = 1399269257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1399269203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233211543 + ... + 233211548.

It is an arithmetic number, because the mean of its divisors is an integer number (466423092).

Almost surely, 2^1399269273 is an apocalyptic number.

It is an amenable number.

1399269273 is a deficient number, since it is larger than the sum of its proper divisors (466423095).

1399269273 is an equidigital number, since it uses as much as digits as its factorization.

1399269273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466423094.

The product of its digits is 1102248, while the sum is 51.

The square root of 1399269273 is about 37406.8078429582. The cubic root of 1399269273 is about 1118.4942757769.

The spelling of 1399269273 in words is "one billion, three hundred ninety-nine million, two hundred sixty-nine thousand, two hundred seventy-three".