73949 has 4 divisors (see below), whose sum is σ = 75036. Its totient is φ = 72864.

The previous prime is 73943. The next prime is 73951. The reversal of 73949 is 94937.

73949 = 156² + 157² + 158².

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94937 = 139 ⋅683.

It can be written as a sum of positive squares in 2 ways, for example, as 13924 + 60025 = 118^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 73949 - 2⁸ = 73693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73943) 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, 434 + ... + 579.

It is an arithmetic number, because the mean of its divisors is an integer number (18759).

2⁷³⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

73949 is a deficient number, since it is larger than the sum of its proper divisors (1087).

73949 is a wasteful number, since it uses less digits than its factorization.

73949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086.

The product of its digits is 6804, while the sum is 32.

The square root of 73949 is about 271.9356541537. The cubic root of 73949 is about 41.9737174945.

The spelling of 73949 in words is "seventy-three thousand, nine hundred forty-nine".