1397240852 has 24 divisors (see below), whose sum is σ = 2796321024. Its totient is φ = 598423392.

The previous prime is 1397240849. The next prime is 1397240857. The reversal of 1397240852 is 2580427931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397240857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29093 + ... + 60339.

It is an arithmetic number, because the mean of its divisors is an integer number (116513376).

Almost surely, 2^1397240852 is an apocalyptic number.

It is an amenable number.

1397240852 is an abundant number, since it is smaller than the sum of its proper divisors (1399080172).

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

1397240852 is a wasteful number, since it uses less digits than its factorization.

1397240852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32855 (or 32853 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1397240852 is about 37379.6850173995. The cubic root of 1397240852 is about 1117.9535472457.

The spelling of 1397240852 in words is "one billion, three hundred ninety-seven million, two hundred forty thousand, eight hundred fifty-two".