1288334949 has 16 divisors (see below), whose sum is σ = 1955418624. Its totient is φ = 746860400.

The previous prime is 1288334939. The next prime is 1288334951. The reversal of 1288334949 is 9494338821.

It is not a de Polignac number, because 1288334949 - 2⁴ = 1288334933 is a prime.

It is a super-3 number, since 3×1288334949³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288334909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847947 + ... + 849464.

It is an arithmetic number, because the mean of its divisors is an integer number (122213664).

Almost surely, 2^1288334949 is an apocalyptic number.

It is an amenable number.

1288334949 is a deficient number, since it is larger than the sum of its proper divisors (667083675).

1288334949 is a wasteful number, since it uses less digits than its factorization.

1288334949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697448.

The product of its digits is 1492992, while the sum is 51.

The square root of 1288334949 is about 35893.3830810081. The cubic root of 1288334949 is about 1088.1186717825.

The spelling of 1288334949 in words is "one billion, two hundred eighty-eight million, three hundred thirty-four thousand, nine hundred forty-nine".