351979849 has 24 divisors (see below), whose sum is σ = 407889432. Its totient is φ = 302515200.

The previous prime is 351979847. The next prime is 351979867. The reversal of 351979849 is 948979153.

It can be written as a sum of positive squares in 12 ways, for example, as 123365449 + 228614400 = 11107^2 + 15120^2 .

It is not a de Polignac number, because 351979849 - 2¹ = 351979847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 351979849.

It is not an unprimeable number, because it can be changed into a prime (351979847) 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, 289567 + ... + 290779.

It is an arithmetic number, because the mean of its divisors is an integer number (16995393).

Almost surely, 2^351979849 is an apocalyptic number.

It is an amenable number.

351979849 is a deficient number, since it is larger than the sum of its proper divisors (55909583).

351979849 is a wasteful number, since it uses less digits than its factorization.

351979849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357 (or 1344 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 351979849 is about 18761.1260056533. The cubic root of 351979849 is about 706.0561933139.

The spelling of 351979849 in words is "three hundred fifty-one million, nine hundred seventy-nine thousand, eight hundred forty-nine".