73549139 has 4 divisors (see below), whose sum is σ = 73575840. Its totient is φ = 73522440.

The previous prime is 73549127. The next prime is 73549141. The reversal of 73549139 is 93194537.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93194537 = 6311 ⋅14767.

It is a cyclic number.

It is not a de Polignac number, because 73549139 - 2⁸ = 73548883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73549096 and 73549105.

It is not an unprimeable number, because it can be changed into a prime (73549159) 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, 8672 + ... + 14909.

It is an arithmetic number, because the mean of its divisors is an integer number (18393960).

Almost surely, 2^73549139 is an apocalyptic number.

73549139 is a deficient number, since it is larger than the sum of its proper divisors (26701).

73549139 is a wasteful number, since it uses less digits than its factorization.

73549139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26700.

The product of its digits is 102060, while the sum is 41.

The square root of 73549139 is about 8576.0794655833. The cubic root of 73549139 is about 418.9792654397.

The spelling of 73549139 in words is "seventy-three million, five hundred forty-nine thousand, one hundred thirty-nine".