981554479 has 2 divisors, whose sum is σ = 981554480. Its totient is φ = 981554478.

The previous prime is 981554471. The next prime is 981554491. The reversal of 981554479 is 974455189.

981554479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (974455189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 981554479 - 2³ = 981554471 is a prime.

It is a super-2 number, since 2×981554479² = 1926898390489922882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981554471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490777239 + 490777240.

It is an arithmetic number, because the mean of its divisors is an integer number (490777240).

Almost surely, 2^981554479 is an apocalyptic number.

981554479 is a deficient number, since it is larger than the sum of its proper divisors (1).

981554479 is an equidigital number, since it uses as much as digits as its factorization.

981554479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 52.

The square root of 981554479 is about 31329.7698523305. The cubic root of 981554479 is about 993.8132966341.

The spelling of 981554479 in words is "nine hundred eighty-one million, five hundred fifty-four thousand, four hundred seventy-nine".