1399550976 has 132 divisors (see below), whose sum is σ = 4279368132. Its totient is φ = 439025664.

The previous prime is 1399550951. The next prime is 1399551047. The reversal of 1399550976 is 6790559931.

1399550976 is a `hidden beast` number, since 13 + 9 + 9 + 550 + 9 + 76 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 727704576 + 671846400 = 26976^2 + 25920^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152206 + ... + 161138.

Almost surely, 2^1399550976 is an apocalyptic number.

1399550976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1399550976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2139684066).

1399550976 is an abundant number, since it is smaller than the sum of its proper divisors (2879817156).

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

1399550976 is a wasteful number, since it uses less digits than its factorization.

1399550976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8976 (or 8955 counting only the distinct ones).

The product of its (nonzero) digits is 2296350, while the sum is 54.

The square root of 1399550976 is about 37410.5730509438. The cubic root of 1399550976 is about 1118.5693297252.

The spelling of 1399550976 in words is "one billion, three hundred ninety-nine million, five hundred fifty thousand, nine hundred seventy-six".