1396519971 has 32 divisors (see below), whose sum is σ = 2384245248. Its totient is φ = 705853440.

The previous prime is 1396519951. The next prime is 1396519973. The reversal of 1396519971 is 1799156931.

It is a happy number.

It is not a de Polignac number, because 1396519971 - 2⁵ = 1396519939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1396519973) 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, 73150 + ... + 90243.

It is an arithmetic number, because the mean of its divisors is an integer number (74507664).

Almost surely, 2^1396519971 is an apocalyptic number.

1396519971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1396519971 is a deficient number, since it is larger than the sum of its proper divisors (987725277).

1396519971 is a wasteful number, since it uses less digits than its factorization.

1396519971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163451.

The product of its digits is 459270, while the sum is 51.

The square root of 1396519971 is about 37370.0410890863. The cubic root of 1396519971 is about 1117.7612515729.

The spelling of 1396519971 in words is "one billion, three hundred ninety-six million, five hundred nineteen thousand, nine hundred seventy-one".