309534149 has 8 divisors (see below), whose sum is σ = 326043840. Its totient is φ = 293046336.

The previous prime is 309534109. The next prime is 309534157. The reversal of 309534149 is 941435903.

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

It is a cyclic number.

It is not a de Polignac number, because 309534149 - 2²⁸ = 41098693 is a prime.

It is a super-2 number, since 2×309534149² = 191622778794308402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309534109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29309 + ... + 38445.

It is an arithmetic number, because the mean of its divisors is an integer number (40755480).

Almost surely, 2^309534149 is an apocalyptic number.

It is an amenable number.

309534149 is a deficient number, since it is larger than the sum of its proper divisors (16509691).

309534149 is a wasteful number, since it uses less digits than its factorization.

309534149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10939.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 309534149 is about 17593.5826084399. The cubic root of 309534149 is about 676.4507609796.

The spelling of 309534149 in words is "three hundred nine million, five hundred thirty-four thousand, one hundred forty-nine".