309499941 has 16 divisors (see below), whose sum is σ = 418936320. Its totient is φ = 203221440.

The previous prime is 309499933. The next prime is 309499963. The reversal of 309499941 is 149994903.

It is not a de Polignac number, because 309499941 - 2³ = 309499933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309499991) 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, 53836 + ... + 59306.

It is an arithmetic number, because the mean of its divisors is an integer number (26183520).

Almost surely, 2^309499941 is an apocalyptic number.

It is an amenable number.

309499941 is a deficient number, since it is larger than the sum of its proper divisors (109436379).

309499941 is a wasteful number, since it uses less digits than its factorization.

309499941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 309499941 is about 17592.6104089189. The cubic root of 309499941 is about 676.4258408643.

The spelling of 309499941 in words is "three hundred nine million, four hundred ninety-nine thousand, nine hundred forty-one".