1309496469 has 16 divisors (see below), whose sum is σ = 1790131968. Its totient is φ = 851075072.

The previous prime is 1309496459. The next prime is 1309496491. The reversal of 1309496469 is 9646949031.

It is a cyclic number.

It is not a de Polignac number, because 1309496469 - 2⁴ = 1309496453 is a prime.

It is a super-2 number, since 2×1309496469² = 3429562004646935922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309496429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18169 + ... + 54305.

It is an arithmetic number, because the mean of its divisors is an integer number (111883248).

Almost surely, 2^1309496469 is an apocalyptic number.

It is an amenable number.

1309496469 is a deficient number, since it is larger than the sum of its proper divisors (480635499).

1309496469 is a wasteful number, since it uses less digits than its factorization.

1309496469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36444.

The product of its (nonzero) digits is 1259712, while the sum is 51.

The square root of 1309496469 is about 36186.9654571919. The cubic root of 1309496469 is about 1094.0439711189.

The spelling of 1309496469 in words is "one billion, three hundred nine million, four hundred ninety-six thousand, four hundred sixty-nine".