5429806981 has 4 divisors (see below), whose sum is σ = 5429978764. Its totient is φ = 5429635200.

The previous prime is 5429806931. The next prime is 5429807011. The reversal of 5429806981 is 1896089245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22410756 + 5407396225 = 4734^2 + 73535^2 .

It is a cyclic number.

It is not a de Polignac number, because 5429806981 - 2⁷ = 5429806853 is a prime.

It is a super-2 number, since 2×5429806981² = 58965607701832668722, 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 (5429806931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23250 + ... + 106771.

It is an arithmetic number, because the mean of its divisors is an integer number (1357494691).

Almost surely, 2^5429806981 is an apocalyptic number.

It is an amenable number.

5429806981 is a deficient number, since it is larger than the sum of its proper divisors (171783).

5429806981 is a wasteful number, since it uses less digits than its factorization.

5429806981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171782.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 5429806981 is about 73687.2240011795. The cubic root of 5429806981 is about 1757.6327269761.

The spelling of 5429806981 in words is "five billion, four hundred twenty-nine million, eight hundred six thousand, nine hundred eighty-one".