48780919 has 4 divisors (see below), whose sum is σ = 53215560. Its totient is φ = 44346280.

The previous prime is 48780889. The next prime is 48780931. The reversal of 48780919 is 91908784.

It is a happy number.

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

It is not a de Polignac number, because 48780919 - 2¹⁷ = 48649847 is a prime.

It is a super-2 number, since 2×48780919² = 4759156116969122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48780959) 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, 2217304 + ... + 2217325.

It is an arithmetic number, because the mean of its divisors is an integer number (13303890).

Almost surely, 2^48780919 is an apocalyptic number.

48780919 is a deficient number, since it is larger than the sum of its proper divisors (4434641).

48780919 is a wasteful number, since it uses less digits than its factorization.

48780919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434640.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 48780919 is about 6984.3338265006. Note that the first 3 decimals coincide. The cubic root of 48780919 is about 365.3843926903.

It can be divided in two parts, 487 and 80919, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 48780919 in words is "forty-eight million, seven hundred eighty thousand, nine hundred nineteen".