49620819 has 4 divisors (see below), whose sum is σ = 66161096. Its totient is φ = 33080544.

The previous prime is 49620797. The next prime is 49620859. The reversal of 49620819 is 91802694.

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

It is not a de Polignac number, because 49620819 - 2⁵ = 49620787 is a prime.

It is a super-2 number, since 2×49620819² = 4924451356461522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49620859) 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, 8270134 + ... + 8270139.

It is an arithmetic number, because the mean of its divisors is an integer number (16540274).

Almost surely, 2^49620819 is an apocalyptic number.

49620819 is a deficient number, since it is larger than the sum of its proper divisors (16540277).

49620819 is a wasteful number, since it uses less digits than its factorization.

49620819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16540276.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 49620819 is about 7044.2046392762. The cubic root of 49620819 is about 367.4695092478.

The spelling of 49620819 in words is "forty-nine million, six hundred twenty thousand, eight hundred nineteen".