1396408869 has 24 divisors (see below), whose sum is σ = 2114785920. Its totient is φ = 910263456.

The previous prime is 1396408837. The next prime is 1396408877. The reversal of 1396408869 is 9688046931.

It is not a de Polignac number, because 1396408869 - 2⁵ = 1396408837 is a prime.

It is a super-2 number, since 2×1396408869² = 3899915458843718322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396408879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1330657 + ... + 1331705.

It is an arithmetic number, because the mean of its divisors is an integer number (88116080).

Almost surely, 2^1396408869 is an apocalyptic number.

It is an amenable number.

1396408869 is a deficient number, since it is larger than the sum of its proper divisors (718377051).

1396408869 is an frugal number, since it uses more digits than its factorization.

1396408869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154 (or 1099 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 1396408869 is about 37368.5545479083. The cubic root of 1396408869 is about 1117.7316091268.

The spelling of 1396408869 in words is "one billion, three hundred ninety-six million, four hundred eight thousand, eight hundred sixty-nine".