83149427 has 4 divisors (see below), whose sum is σ = 83174520. Its totient is φ = 83124336.

The previous prime is 83149411. The next prime is 83149433. The reversal of 83149427 is 72494138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72494138 = 2 ⋅36247069.

It is a cyclic number.

It is not a de Polignac number, because 83149427 - 2⁴ = 83149411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83149447) 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, 6653 + ... + 14510.

It is an arithmetic number, because the mean of its divisors is an integer number (20793630).

Almost surely, 2^83149427 is an apocalyptic number.

83149427 is a deficient number, since it is larger than the sum of its proper divisors (25093).

83149427 is a wasteful number, since it uses less digits than its factorization.

83149427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25092.

The product of its digits is 48384, while the sum is 38.

The square root of 83149427 is about 9118.6307634425. The cubic root of 83149427 is about 436.4686817510.

The spelling of 83149427 in words is "eighty-three million, one hundred forty-nine thousand, four hundred twenty-seven".