981487954 has 8 divisors (see below), whose sum is σ = 1492967808. Its totient is φ = 483832020.

The previous prime is 981487933. The next prime is 981487957. The reversal of 981487954 is 459784189.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×981487954² = 1926637207694212232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 981487895 and 981487904.

It is not an unprimeable number, because it can be changed into a prime (981487957) 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, 3455802 + ... + 3456085.

It is an arithmetic number, because the mean of its divisors is an integer number (186620976).

Almost surely, 2^981487954 is an apocalyptic number.

981487954 is a deficient number, since it is larger than the sum of its proper divisors (511479854).

981487954 is a wasteful number, since it uses less digits than its factorization.

981487954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911960.

The product of its digits is 2903040, while the sum is 55.

The square root of 981487954 is about 31328.7081444480. The cubic root of 981487954 is about 993.7908441791.

The spelling of 981487954 in words is "nine hundred eighty-one million, four hundred eighty-seven thousand, nine hundred fifty-four".