83454381 has 20 divisors (see below), whose sum is σ = 125913084. Its totient is φ = 55085400.

The previous prime is 83454359. The next prime is 83454389. The reversal of 83454381 is 18345438.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

83454381 is a `hidden beast` number, since 8 + 34 + 543 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 76212900 + 7241481 = 8730^2 + 2691^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=303.

It is not a de Polignac number, because 83454381 - 2⁷ = 83454253 is a prime.

It is a super-2 number, since 2×83454381² = 13929267416186322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83454389) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 826231 + ... + 826331.

Almost surely, 2^83454381 is an apocalyptic number.

83454381 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

83454381 is a deficient number, since it is larger than the sum of its proper divisors (42458703).

83454381 is an frugal number, since it uses more digits than its factorization.

83454381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 104 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 83454381 is about 9135.3369395989. The cubic root of 83454381 is about 437.0016198031.

The spelling of 83454381 in words is "eighty-three million, four hundred fifty-four thousand, three hundred eighty-one".