82739451 has 4 divisors (see below), whose sum is σ = 110319272. Its totient is φ = 55159632.

The previous prime is 82739443. The next prime is 82739453. The reversal of 82739451 is 15493728.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 82739451 - 2³ = 82739443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82739453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13789906 + ... + 13789911.

It is an arithmetic number, because the mean of its divisors is an integer number (27579818).

Almost surely, 2^82739451 is an apocalyptic number.

82739451 is a deficient number, since it is larger than the sum of its proper divisors (27579821).

82739451 is a wasteful number, since it uses less digits than its factorization.

82739451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27579820.

The product of its digits is 60480, while the sum is 39.

The square root of 82739451 is about 9096.1228553709. The cubic root of 82739451 is about 435.7501496848.

The spelling of 82739451 in words is "eighty-two million, seven hundred thirty-nine thousand, four hundred fifty-one".