349137533 has 4 divisors (see below), whose sum is σ = 349991580. Its totient is φ = 348283488.

The previous prime is 349137527. The next prime is 349137557. The reversal of 349137533 is 335731943.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 335731943 = 23 ⋅14597041.

It can be written as a sum of positive squares in 2 ways, for example, as 315346564 + 33790969 = 17758^2 + 5813^2 .

It is a cyclic number.

It is not a de Polignac number, because 349137533 - 2⁸ = 349137277 is a prime.

It is a super-3 number, since 3×349137533³ (a number of 27 digits) contains 333 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 (349137563) 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, 426410 + ... + 427227.

It is an arithmetic number, because the mean of its divisors is an integer number (87497895).

Almost surely, 2^349137533 is an apocalyptic number.

It is an amenable number.

349137533 is a deficient number, since it is larger than the sum of its proper divisors (854047).

349137533 is an equidigital number, since it uses as much as digits as its factorization.

349137533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854046.

The product of its digits is 102060, while the sum is 38.

The square root of 349137533 is about 18685.2223160443. Note that the first 3 decimals coincide. The cubic root of 349137533 is about 704.1505339737.

The spelling of 349137533 in words is "three hundred forty-nine million, one hundred thirty-seven thousand, five hundred thirty-three".