1387269207 has 16 divisors (see below), whose sum is σ = 2176109280. Its totient is φ = 870443136.

The previous prime is 1387269193. The next prime is 1387269217. The reversal of 1387269207 is 7029627831.

1387269207 is a `hidden beast` number, since 1 + 387 + 2 + 69 + 207 = 666.

It is not a de Polignac number, because 1387269207 - 2²⁷ = 1253051479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387269217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1510728 + ... + 1511645.

It is an arithmetic number, because the mean of its divisors is an integer number (136006830).

Almost surely, 2^1387269207 is an apocalyptic number.

1387269207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1387269207 is a deficient number, since it is larger than the sum of its proper divisors (788840073).

1387269207 is a wasteful number, since it uses less digits than its factorization.

1387269207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022399 (or 3022393 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1387269207 is about 37246.0629731519. The cubic root of 1387269207 is about 1115.2877073986.

The spelling of 1387269207 in words is "one billion, three hundred eighty-seven million, two hundred sixty-nine thousand, two hundred seven".