5430979981 has 4 divisors (see below), whose sum is σ = 6206834272. Its totient is φ = 4655125692.

The previous prime is 5430979973. The next prime is 5430979997. The reversal of 5430979981 is 1899790345.

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 not a de Polignac number, because 5430979981 - 2³ = 5430979973 is a prime.

It is a super-2 number, since 2×5430979981² = 58991087108045520722, 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 (5430979921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387927135 + ... + 387927148.

It is an arithmetic number, because the mean of its divisors is an integer number (1551708568).

Almost surely, 2^5430979981 is an apocalyptic number.

It is an amenable number.

5430979981 is a deficient number, since it is larger than the sum of its proper divisors (775854291).

5430979981 is an equidigital number, since it uses as much as digits as its factorization.

5430979981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775854290.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 5430979981 is about 73695.1828887072. The cubic root of 5430979981 is about 1757.7592848661.

The spelling of 5430979981 in words is "five billion, four hundred thirty million, nine hundred seventy-nine thousand, nine hundred eighty-one".