49399 has 4 divisors (see below), whose sum is σ = 56464. Its totient is φ = 42336.

The previous prime is 49393. The next prime is 49409. The reversal of 49399 is 99394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99394 = 2 ⋅49697.

It is not a de Polignac number, because 49399 - 2³ = 49391 is a prime.

It is a super-2 number, since 2×49399² = 4880522402, which contains 22 as substring.

It is a Duffinian number.

49399 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49391) 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, 3522 + ... + 3535.

It is an arithmetic number, because the mean of its divisors is an integer number (14116).

2⁴⁹³⁹⁹ is an apocalyptic number.

49399 is a deficient number, since it is larger than the sum of its proper divisors (7065).

49399 is an equidigital number, since it uses as much as digits as its factorization.

49399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7064.

The product of its digits is 8748, while the sum is 34.

The square root of 49399 is about 222.2588580912. The cubic root of 49399 is about 36.6921127316.

The spelling of 49399 in words is "forty-nine thousand, three hundred ninety-nine".