309094494 has 8 divisors (see below), whose sum is σ = 618189000. Its totient is φ = 103031496.

The previous prime is 309094481. The next prime is 309094501. The reversal of 309094494 is 494490903.

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

309094494 is an admirable number.

It is a super-2 number, since 2×309094494² = 191078812442232072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25757869 + ... + 25757880.

It is an arithmetic number, because the mean of its divisors is an integer number (77273625).

Almost surely, 2^309094494 is an apocalyptic number.

309094494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

309094494 is a wasteful number, since it uses less digits than its factorization.

309094494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51515754.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 309094494 is about 17581.0834137149. The cubic root of 309094494 is about 676.1303376591.

It can be divided in two parts, 30909449 and 4, that added together give a triangular number (30909453 = T₇₈₆₂).

The spelling of 309094494 in words is "three hundred nine million, ninety-four thousand, four hundred ninety-four".