1397206044 has 96 divisors (see below), whose sum is σ = 3913931840. Its totient is φ = 428488704.

The previous prime is 1397206043. The next prime is 1397206049. The reversal of 1397206044 is 4406027931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397206043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471672 + ... + 474624.

Almost surely, 2^1397206044 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 1397206044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956965920).

1397206044 is an abundant number, since it is smaller than the sum of its proper divisors (2516725796).

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

1397206044 is a wasteful number, since it uses less digits than its factorization.

1397206044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316 (or 3308 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1397206044 is about 37379.2194140006. The cubic root of 1397206044 is about 1117.9442636995.

The spelling of 1397206044 in words is "one billion, three hundred ninety-seven million, two hundred six thousand, forty-four".