69883981 has 4 divisors (see below), whose sum is σ = 69969312. Its totient is φ = 69798652.

The previous prime is 69883937. The next prime is 69883999. The reversal of 69883981 is 18938896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69883981 - 2⁹ = 69883469 is a prime.

It is a super-2 number, since 2×69883981² = 9767541600816722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69883921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41425 + ... + 43078.

It is an arithmetic number, because the mean of its divisors is an integer number (17492328).

Almost surely, 2^69883981 is an apocalyptic number.

It is an amenable number.

69883981 is a deficient number, since it is larger than the sum of its proper divisors (85331).

69883981 is an equidigital number, since it uses as much as digits as its factorization.

69883981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85330.

The product of its digits is 746496, while the sum is 52.

The square root of 69883981 is about 8359.6639286517. The cubic root of 69883981 is about 411.9007148354.

The spelling of 69883981 in words is "sixty-nine million, eight hundred eighty-three thousand, nine hundred eighty-one".