1396621715 has 8 divisors (see below), whose sum is σ = 1676166288. Its totient is φ = 1117150560.

The previous prime is 1396621693. The next prime is 1396621717. The reversal of 1396621715 is 5171266931.

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

It is not a de Polignac number, because 1396621715 - 2¹⁶ = 1396556179 is a prime.

It is a super-3 number, since 3×1396621715³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1396621717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40889 + ... + 66821.

It is an arithmetic number, because the mean of its divisors is an integer number (209520786).

Almost surely, 2^1396621715 is an apocalyptic number.

1396621715 is a deficient number, since it is larger than the sum of its proper divisors (279544573).

1396621715 is a wasteful number, since it uses less digits than its factorization.

1396621715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36709.

The product of its digits is 68040, while the sum is 41.

The square root of 1396621715 is about 37371.4023686562. The cubic root of 1396621715 is about 1117.7883958891.

The spelling of 1396621715 in words is "one billion, three hundred ninety-six million, six hundred twenty-one thousand, seven hundred fifteen".