1396945 has 12 divisors (see below), whose sum is σ = 1843380. Its totient is φ = 1015520.

The previous prime is 1396939. The next prime is 1396949. The reversal of 1396945 is 5496931.

It can be written as a sum of positive squares in 2 ways, for example, as 853776 + 543169 = 924^2 + 737^2 .

It is not a de Polignac number, because 1396945 - 2⁷ = 1396817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1396949) 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, 550 + ... + 1759.

It is an arithmetic number, because the mean of its divisors is an integer number (153615).

2^1396945 is an apocalyptic number.

It is an amenable number.

1396945 is a deficient number, since it is larger than the sum of its proper divisors (446435).

1396945 is a wasteful number, since it uses less digits than its factorization.

1396945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336 (or 2325 counting only the distinct ones).

The product of its digits is 29160, while the sum is 37.

The square root of 1396945 is about 1181.9242784544. The cubic root of 1396945 is about 111.7874636455.

It can be divided in two parts, 139 and 6945, that multiplied together give a triangular number (965355 = T₁₃₈₉).

The spelling of 1396945 in words is "one million, three hundred ninety-six thousand, nine hundred forty-five".