1396172686 has 8 divisors (see below), whose sum is σ = 2094475680. Its totient is φ = 698014128.

The previous prime is 1396172681. The next prime is 1396172711. The reversal of 1396172686 is 6862716931.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396172681) 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 3 ways as a sum of consecutive naturals, for example, 7366 + ... + 53353.

It is an arithmetic number, because the mean of its divisors is an integer number (261809460).

Almost surely, 2^1396172686 is an apocalyptic number.

1396172686 is a deficient number, since it is larger than the sum of its proper divisors (698302994).

1396172686 is a wasteful number, since it uses less digits than its factorization.

1396172686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72218.

The product of its digits is 653184, while the sum is 49.

The square root of 1396172686 is about 37365.3942304909. The cubic root of 1396172686 is about 1117.6685893586.

The spelling of 1396172686 in words is "one billion, three hundred ninety-six million, one hundred seventy-two thousand, six hundred eighty-six".