1369796420 has 72 divisors (see below), whose sum is σ = 3070577160. Its totient is φ = 513187840.

The previous prime is 1369796399. The next prime is 1369796423. The reversal of 1369796420 is 246979631.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 446730496 + 923065924 = 21136^2 + 30382^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369796423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1554380 + ... + 1555260.

It is an arithmetic number, because the mean of its divisors is an integer number (42646905).

Almost surely, 2^1369796420 is an apocalyptic number.

1369796420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1369796420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1535288580).

1369796420 is an abundant number, since it is smaller than the sum of its proper divisors (1700780740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1369796420 is a wasteful number, since it uses less digits than its factorization.

1369796420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 1369796420 is about 37010.7608676179. The cubic root of 1369796420 is about 1110.5855255638.

The spelling of 1369796420 in words is "one billion, three hundred sixty-nine million, seven hundred ninety-six thousand, four hundred twenty".