1397850 has 24 divisors (see below), whose sum is σ = 3467040. Its totient is φ = 372720.

The previous prime is 1397839. The next prime is 1397857. The reversal of 1397850 is 587931.

It is not an unprimeable number, because it can be changed into a prime (1397857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4510 + ... + 4809.

It is an arithmetic number, because the mean of its divisors is an integer number (144460).

2^1397850 is an apocalyptic number.

1397850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1397850 is an abundant number, since it is smaller than the sum of its proper divisors (2069190).

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

1397850 is a wasteful number, since it uses less digits than its factorization.

1397850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9334 (or 9329 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1397850 is about 1182.3070667132. The cubic root of 1397850 is about 111.8115986486.

It can be divided in two parts, 13978 and 50, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 1397850 in words is "one million, three hundred ninety-seven thousand, eight hundred fifty".