1396249231 has 8 divisors (see below), whose sum is σ = 1507991184. Its totient is φ = 1285127040.

The previous prime is 1396249193. The next prime is 1396249241. The reversal of 1396249231 is 1329426931.

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

It is a cyclic number.

It is not a de Polignac number, because 1396249231 - 2¹¹ = 1396247183 is a prime.

It is a super-2 number, since 2×1396249231² = 3899023830136182722, 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 (1396249241) 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, 150250 + ... + 159271.

It is an arithmetic number, because the mean of its divisors is an integer number (188498898).

Almost surely, 2^1396249231 is an apocalyptic number.

1396249231 is a deficient number, since it is larger than the sum of its proper divisors (111741953).

1396249231 is a wasteful number, since it uses less digits than its factorization.

1396249231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309881.

The product of its digits is 69984, while the sum is 40.

The square root of 1396249231 is about 37366.4184930801. The cubic root of 1396249231 is about 1117.6890143341.

The spelling of 1396249231 in words is "one billion, three hundred ninety-six million, two hundred forty-nine thousand, two hundred thirty-one".