1369454940 has 288 divisors, whose sum is σ = 4971657600. Its totient is φ = 304819200.

The previous prime is 1369454929. The next prime is 1369454971. The reversal of 1369454940 is 494549631.

1369454940 is a `hidden beast` number, since 1 + 3 + 69 + 4 + 549 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2531070 + ... + 2531610.

It is an arithmetic number, because the mean of its divisors is an integer number (17262700).

Almost surely, 2^1369454940 is an apocalyptic number.

1369454940 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 1369454940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485828800).

1369454940 is an abundant number, since it is smaller than the sum of its proper divisors (3602202660).

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

1369454940 is a wasteful number, since it uses less digits than its factorization.

1369454940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1369454940 is about 37006.1473271671. The cubic root of 1369454940 is about 1110.4932310062.

The spelling of 1369454940 in words is "one billion, three hundred sixty-nine million, four hundred fifty-four thousand, nine hundred forty".