1369919 has 4 divisors (see below), whose sum is σ = 1442040. Its totient is φ = 1297800.

The previous prime is 1369897. The next prime is 1369943. The reversal of 1369919 is 9199631.

1369919 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9199631 = 7 ⋅1314233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1369919 is a prime.

It is a super-2 number, since 2×1369919² = 3753356133122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369969) 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, 36032 + ... + 36069.

It is an arithmetic number, because the mean of its divisors is an integer number (360510).

2^1369919 is an apocalyptic number.

1369919 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1369919 is a deficient number, since it is larger than the sum of its proper divisors (72121).

1369919 is an equidigital number, since it uses as much as digits as its factorization.

1369919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72120.

The product of its digits is 13122, while the sum is 38.

The square root of 1369919 is about 1170.4353890754. The cubic root of 1369919 is about 111.0618652509.

It can be divided in two parts, 13699 and 19, that multiplied together give a triangular number (260281 = T₇₂₁).

The spelling of 1369919 in words is "one million, three hundred sixty-nine thousand, nine hundred nineteen".