1399127471 has 4 divisors (see below), whose sum is σ = 1599002832. Its totient is φ = 1199252112.

The previous prime is 1399127461. The next prime is 1399127473. The reversal of 1399127471 is 1747219931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1399127471 - 2⁶ = 1399127407 is a prime.

It is a super-3 number, since 3×1399127471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399127473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99937670 + ... + 99937683.

It is an arithmetic number, because the mean of its divisors is an integer number (399750708).

Almost surely, 2^1399127471 is an apocalyptic number.

1399127471 is a deficient number, since it is larger than the sum of its proper divisors (199875361).

1399127471 is an equidigital number, since it uses as much as digits as its factorization.

1399127471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199875360.

The product of its digits is 95256, while the sum is 44.

The square root of 1399127471 is about 37404.9123912889. The cubic root of 1399127471 is about 1118.4564917500.

The spelling of 1399127471 in words is "one billion, three hundred ninety-nine million, one hundred twenty-seven thousand, four hundred seventy-one".