1369047479 has 4 divisors (see below), whose sum is σ = 1370680080. Its totient is φ = 1367414880.

The previous prime is 1369047473. The next prime is 1369047503. The reversal of 1369047479 is 9747409631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9747409631 = 1213 ⋅8035787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1369047479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369047473) 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, 815042 + ... + 816719.

It is an arithmetic number, because the mean of its divisors is an integer number (342670020).

Almost surely, 2^1369047479 is an apocalyptic number.

1369047479 is a deficient number, since it is larger than the sum of its proper divisors (1632601).

1369047479 is an equidigital number, since it uses as much as digits as its factorization.

1369047479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632600.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 1369047479 is about 37000.6416025452. The cubic root of 1369047479 is about 1110.3830831527.

The spelling of 1369047479 in words is "one billion, three hundred sixty-nine million, forty-seven thousand, four hundred seventy-nine".