309463949494 has 32 divisors (see below), whose sum is σ = 541448640000. Its totient is φ = 132599897640.

The previous prime is 309463949471. The next prime is 309463949537. The reversal of 309463949494 is 494949364903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3453679 + ... + 3542149.

It is an arithmetic number, because the mean of its divisors is an integer number (16920270000).

Almost surely, 2^309463949494 is an apocalyptic number.

309463949494 is a deficient number, since it is larger than the sum of its proper divisors (231984690506).

309463949494 is an equidigital number, since it uses as much as digits as its factorization.

309463949494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93593 (or 93579 counting only the distinct ones).

The product of its (nonzero) digits is 90699264, while the sum is 64.

The spelling of 309463949494 in words is "three hundred nine billion, four hundred sixty-three million, nine hundred forty-nine thousand, four hundred ninety-four".