2351299949 has 4 divisors (see below), whose sum is σ = 2354617020. Its totient is φ = 2347982880.

The previous prime is 2351299933. The next prime is 2351299957. The reversal of 2351299949 is 9499921532.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1121044324 + 1230255625 = 33482^2 + 35075^2 .

It is a cyclic number.

It is not a de Polignac number, because 2351299949 - 2⁴ = 2351299933 is a prime.

It is a super-2 number, since 2×2351299949² = 11057222900334805202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2351299949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2351299649) 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, 1657472 + ... + 1658889.

It is an arithmetic number, because the mean of its divisors is an integer number (588654255).

Almost surely, 2^2351299949 is an apocalyptic number.

It is an amenable number.

2351299949 is a deficient number, since it is larger than the sum of its proper divisors (3317071).

2351299949 is an equidigital number, since it uses as much as digits as its factorization.

2351299949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317070.

The product of its digits is 1574640, while the sum is 53.

The square root of 2351299949 is about 48490.2046706343. The cubic root of 2351299949 is about 1329.7479969904.

The spelling of 2351299949 in words is "two billion, three hundred fifty-one million, two hundred ninety-nine thousand, nine hundred forty-nine".