1396548431 has 8 divisors (see below), whose sum is σ = 1533966720. Its totient is φ = 1265521752.

The previous prime is 1396548421. The next prime is 1396548449. The reversal of 1396548431 is 1348456931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1396548431 - 2²² = 1392354127 is a prime.

It is a super-2 number, since 2×1396548431² = 3900695040257123522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396548401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1597445 + ... + 1598318.

It is an arithmetic number, because the mean of its divisors is an integer number (191745840).

Almost surely, 2^1396548431 is an apocalyptic number.

1396548431 is a deficient number, since it is larger than the sum of its proper divisors (137418289).

1396548431 is a wasteful number, since it uses less digits than its factorization.

1396548431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195805.

The product of its digits is 311040, while the sum is 44.

The square root of 1396548431 is about 37370.4218734549. The cubic root of 1396548431 is about 1117.7688445587.

The spelling of 1396548431 in words is "one billion, three hundred ninety-six million, five hundred forty-eight thousand, four hundred thirty-one".