1396172687 has 32 divisors (see below), whose sum is σ = 1818432000. Its totient is φ = 1040957568.

The previous prime is 1396172681. The next prime is 1396172711. The reversal of 1396172687 is 7862716931.

It is not a de Polignac number, because 1396172687 - 2⁶ = 1396172623 is a prime.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338564 + ... + 342662.

It is an arithmetic number, because the mean of its divisors is an integer number (56826000).

Almost surely, 2^1396172687 is an apocalyptic number.

1396172687 is a deficient number, since it is larger than the sum of its proper divisors (422259313).

1396172687 is a wasteful number, since it uses less digits than its factorization.

1396172687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335.

The product of its digits is 762048, while the sum is 50.

The square root of 1396172687 is about 37365.3942438722. The cubic root of 1396172687 is about 1117.6685896255.

The spelling of 1396172687 in words is "one billion, three hundred ninety-six million, one hundred seventy-two thousand, six hundred eighty-seven".