1396509492 has 96 divisors (see below), whose sum is σ = 3900782592. Its totient is φ = 380198016.

The previous prime is 1396509479. The next prime is 1396509493. The reversal of 1396509492 is 2949056931.

It is a super-2 number, since 2×1396509492² = 3900477522492196128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396509493) 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, 564843 + ... + 567309.

It is an arithmetic number, because the mean of its divisors is an integer number (40633152).

Almost surely, 2^1396509492 is an apocalyptic number.

1396509492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396509492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1950391296).

1396509492 is an abundant number, since it is smaller than the sum of its proper divisors (2504273100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1396509492 is a wasteful number, since it uses less digits than its factorization.

1396509492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797 (or 2795 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 1396509492 is about 37369.9008829298. The cubic root of 1396509492 is about 1117.7584558020.

The spelling of 1396509492 in words is "one billion, three hundred ninety-six million, five hundred nine thousand, four hundred ninety-two".