854013981 has 8 divisors (see below), whose sum is σ = 1145268000. Its totient is φ = 566051312.

The previous prime is 854013961. The next prime is 854014003. The reversal of 854013981 is 189310458.

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

It is a cyclic number.

It is not a de Polignac number, because 854013981 - 2⁵ = 854013949 is a prime.

It is a super-2 number, since 2×854013981² = 1458679759486936722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854013931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822231 + ... + 823268.

It is an arithmetic number, because the mean of its divisors is an integer number (143158500).

Almost surely, 2^854013981 is an apocalyptic number.

It is an amenable number.

854013981 is a deficient number, since it is larger than the sum of its proper divisors (291254019).

854013981 is a wasteful number, since it uses less digits than its factorization.

854013981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645675.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 854013981 is about 29223.5176014114. The cubic root of 854013981 is about 948.7570007520.

The spelling of 854013981 in words is "eight hundred fifty-four million, thirteen thousand, nine hundred eighty-one".