881379993 has 16 divisors (see below), whose sum is σ = 1296441216. Its totient is φ = 529157760.

The previous prime is 881379991. The next prime is 881380007. The reversal of 881379993 is 399973188.

It is not a de Polignac number, because 881379993 - 2¹ = 881379991 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (881379991) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 274005 + ... + 277202.

It is an arithmetic number, because the mean of its divisors is an integer number (81027576).

Almost surely, 2^881379993 is an apocalyptic number.

It is an amenable number.

881379993 is a deficient number, since it is larger than the sum of its proper divisors (415061223).

881379993 is a wasteful number, since it uses less digits than its factorization.

881379993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551264.

The product of its digits is 2939328, while the sum is 57.

The square root of 881379993 is about 29688.0446139519. The cubic root of 881379993 is about 958.7846284239.

The spelling of 881379993 in words is "eight hundred eighty-one million, three hundred seventy-nine thousand, nine hundred ninety-three".