1395945 has 24 divisors (see below), whose sum is σ = 2461056. Its totient is φ = 731808.

The previous prime is 1395943. The next prime is 1395983. The reversal of 1395945 is 5495931.

It is not a de Polignac number, because 1395945 - 2¹ = 1395943 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1395943) 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 23 ways as a sum of consecutive naturals, for example, 2784 + ... + 3246.

It is an arithmetic number, because the mean of its divisors is an integer number (102544).

2^1395945 is an apocalyptic number.

1395945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1395945 is a deficient number, since it is larger than the sum of its proper divisors (1065111).

1395945 is a wasteful number, since it uses less digits than its factorization.

1395945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 538 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 1395945 is about 1181.5011637743. The cubic root of 1395945 is about 111.7607830083.

It can be divided in two parts, 139 and 5945, that added together give a square (6084 = 78²).

The spelling of 1395945 in words is "one million, three hundred ninety-five thousand, nine hundred forty-five".