308969473 has 4 divisors (see below), whose sum is σ = 310330800. Its totient is φ = 307608148.

The previous prime is 308969461. The next prime is 308969483. The reversal of 308969473 is 374969803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308969473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (308969483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680323 + ... + 680776.

It is an arithmetic number, because the mean of its divisors is an integer number (77582700).

It is a Proth number, since it is equal to 9429 ⋅ 2¹⁵ + 1 and 9429 < 2¹⁵.

Almost surely, 2^308969473 is an apocalyptic number.

It is an amenable number.

308969473 is a deficient number, since it is larger than the sum of its proper divisors (1361327).

308969473 is a wasteful number, since it uses less digits than its factorization.

308969473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361326.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 308969473 is about 17577.5274996229. The cubic root of 308969473 is about 676.0391660897.

The spelling of 308969473 in words is "three hundred eight million, nine hundred sixty-nine thousand, four hundred seventy-three".