1396075649 has 4 divisors (see below), whose sum is σ = 1478197764. Its totient is φ = 1313953536.

The previous prime is 1396075633. The next prime is 1396075663. The reversal of 1396075649 is 9465706931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9465706931 = 293 ⋅32306167.

It can be written as a sum of positive squares in 2 ways, for example, as 794845249 + 601230400 = 28193^2 + 24520^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396075649 - 2⁴ = 1396075633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1396075597 and 1396075606.

It is not an unprimeable number, because it can be changed into a prime (1396075619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41061032 + ... + 41061065.

It is an arithmetic number, because the mean of its divisors is an integer number (369549441).

Almost surely, 2^1396075649 is an apocalyptic number.

It is an amenable number.

1396075649 is a deficient number, since it is larger than the sum of its proper divisors (82122115).

1396075649 is an equidigital number, since it uses as much as digits as its factorization.

1396075649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82122114.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 1396075649 is about 37364.0957203570. The cubic root of 1396075649 is about 1117.6426953030.

The spelling of 1396075649 in words is "one billion, three hundred ninety-six million, seventy-five thousand, six hundred forty-nine".