1248979797 has 24 divisors (see below), whose sum is σ = 2003630400. Its totient is φ = 768600144.

The previous prime is 1248979789. The next prime is 1248979829. The reversal of 1248979797 is 7979798421.

1248979797 is a `hidden beast` number, since 12 + 489 + 79 + 79 + 7 = 666.

It is not a de Polignac number, because 1248979797 - 2³ = 1248979789 is a prime.

It is a super-2 number, since 2×1248979797² = 3119901066628322418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248979717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132297 + ... + 141422.

It is an arithmetic number, because the mean of its divisors is an integer number (83484600).

Almost surely, 2^1248979797 is an apocalyptic number.

It is an amenable number.

1248979797 is a deficient number, since it is larger than the sum of its proper divisors (754650603).

1248979797 is a wasteful number, since it uses less digits than its factorization.

1248979797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273754 (or 273735 counting only the distinct ones).

The product of its digits is 16003008, while the sum is 63.

The square root of 1248979797 is about 35340.9082650687. The cubic root of 1248979797 is about 1076.9242038200.

The spelling of 1248979797 in words is "one billion, two hundred forty-eight million, nine hundred seventy-nine thousand, seven hundred ninety-seven".