1396347391 has 8 divisors (see below), whose sum is σ = 1407722400. Its totient is φ = 1384999392.

The previous prime is 1396347389. The next prime is 1396347427. The reversal of 1396347391 is 1937436931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1396347391 - 2¹ = 1396347389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396347311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104401 + ... + 117013.

It is an arithmetic number, because the mean of its divisors is an integer number (175965300).

Almost surely, 2^1396347391 is an apocalyptic number.

1396347391 is a deficient number, since it is larger than the sum of its proper divisors (11375009).

1396347391 is a wasteful number, since it uses less digits than its factorization.

1396347391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13505.

The product of its digits is 367416, while the sum is 46.

The square root of 1396347391 is about 37367.7319488352. The cubic root of 1396347391 is about 1117.7152058813.

The spelling of 1396347391 in words is "one billion, three hundred ninety-six million, three hundred forty-seven thousand, three hundred ninety-one".