1309440496 has 160 divisors (see below), whose sum is σ = 3278901248. Its totient is φ = 492687360.

The previous prime is 1309440481. The next prime is 1309440511. The reversal of 1309440496 is 6940449031.

It is an interprime number because it is at equal distance from previous prime (1309440481) and next prime (1309440511).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3023896 + ... + 3024328.

Almost surely, 2^1309440496 is an apocalyptic number.

1309440496 is a gapful number since it is divisible by the number (16) 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 1309440496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639450624).

1309440496 is an abundant number, since it is smaller than the sum of its proper divisors (1969460752).

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

1309440496 is a wasteful number, since it uses less digits than its factorization.

1309440496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 1309440496 is about 36186.1920627192. The cubic root of 1309440496 is about 1094.0283829909.

The spelling of 1309440496 in words is "one billion, three hundred nine million, four hundred forty thousand, four hundred ninety-six".