353643949 has 4 divisors (see below), whose sum is σ = 355495680. Its totient is φ = 351792220.

The previous prime is 353643947. The next prime is 353643973. The reversal of 353643949 is 949346353.

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 not a de Polignac number, because 353643949 - 2¹ = 353643947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 353643899 and 353643908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353643943) 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, 925579 + ... + 925960.

It is an arithmetic number, because the mean of its divisors is an integer number (88873920).

Almost surely, 2^353643949 is an apocalyptic number.

It is an amenable number.

353643949 is a deficient number, since it is larger than the sum of its proper divisors (1851731).

353643949 is a wasteful number, since it uses less digits than its factorization.

353643949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851730.

The product of its digits is 1049760, while the sum is 46.

The square root of 353643949 is about 18805.4233932661. The cubic root of 353643949 is about 707.1671483039.

The spelling of 353643949 in words is "three hundred fifty-three million, six hundred forty-three thousand, nine hundred forty-nine".