1385497404 has 72 divisors (see below), whose sum is σ = 3694803840. Its totient is φ = 436547232.

The previous prime is 1385497381. The next prime is 1385497429. The reversal of 1385497404 is 4047945831.

1385497404 is a `hidden beast` number, since 1 + 38 + 549 + 74 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1385497404.

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 23 ways as a sum of consecutive naturals, for example, 342039 + ... + 346065.

It is an arithmetic number, because the mean of its divisors is an integer number (51316720).

Almost surely, 2^1385497404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1385497404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1847401920).

1385497404 is an abundant number, since it is smaller than the sum of its proper divisors (2309306436).

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

1385497404 is a wasteful number, since it uses less digits than its factorization.

1385497404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4559 (or 4554 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 1385497404 is about 37222.2702692891. The cubic root of 1385497404 is about 1114.8126945787.

The spelling of 1385497404 in words is "one billion, three hundred eighty-five million, four hundred ninety-seven thousand, four hundred four".