1247866998 has 16 divisors (see below), whose sum is σ = 2852267520. Its totient is φ = 356533416.

The previous prime is 1247866993. The next prime is 1247866999. The reversal of 1247866998 is 8996687421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247866993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14855518 + ... + 14855601.

It is an arithmetic number, because the mean of its divisors is an integer number (178266720).

Almost surely, 2^1247866998 is an apocalyptic number.

1247866998 is an abundant number, since it is smaller than the sum of its proper divisors (1604400522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1247866998 is a wasteful number, since it uses less digits than its factorization.

1247866998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29711131.

The product of its digits is 10450944, while the sum is 60.

The square root of 1247866998 is about 35325.1609762787. The cubic root of 1247866998 is about 1076.6042743683.

The spelling of 1247866998 in words is "one billion, two hundred forty-seven million, eight hundred sixty-six thousand, nine hundred ninety-eight".