1396629745 has 16 divisors (see below), whose sum is σ = 1916893440. Its totient is φ = 956931264.

The previous prime is 1396629743. The next prime is 1396629791. The reversal of 1396629745 is 5479266931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1396629745 - 2¹ = 1396629743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1396629692 and 1396629701.

It is not an unprimeable number, because it can be changed into a prime (1396629743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31039 + ... + 61291.

It is an arithmetic number, because the mean of its divisors is an integer number (119805840).

Almost surely, 2^1396629745 is an apocalyptic number.

It is an amenable number.

1396629745 is a deficient number, since it is larger than the sum of its proper divisors (520263695).

1396629745 is a wasteful number, since it uses less digits than its factorization.

1396629745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31584.

The product of its digits is 2449440, while the sum is 52.

The square root of 1396629745 is about 37371.5098035924. The cubic root of 1396629745 is about 1117.7905381594.

The spelling of 1396629745 in words is "one billion, three hundred ninety-six million, six hundred twenty-nine thousand, seven hundred forty-five".