349091145 has 24 divisors (see below), whose sum is σ = 651637896. Its totient is φ = 171859968.

The previous prime is 349091117. The next prime is 349091147. The reversal of 349091145 is 541190943.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 447561 + 348643584 = 669^2 + 18672^2 .

It is not a de Polignac number, because 349091145 - 2⁶ = 349091081 is a prime.

It is a super-2 number, since 2×349091145² = 243729255034822050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (349091147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297784 + ... + 298953.

It is an arithmetic number, because the mean of its divisors is an integer number (27151579).

Almost surely, 2^349091145 is an apocalyptic number.

It is an amenable number.

349091145 is a deficient number, since it is larger than the sum of its proper divisors (302546751).

349091145 is a wasteful number, since it uses less digits than its factorization.

349091145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596761 (or 596758 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 349091145 is about 18683.9809730154. The cubic root of 349091145 is about 704.1193470453.

The spelling of 349091145 in words is "three hundred forty-nine million, ninety-one thousand, one hundred forty-five".