4053778 has 4 divisors (see below), whose sum is σ = 6080670. Its totient is φ = 2026888.

The previous prime is 4053761. The next prime is 4053779. The reversal of 4053778 is 8773504.

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

It can be written as a sum of positive squares in only one way, i.e., 3359889 + 693889 = 1833^2 + 833^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁵ + 0 + 5⁹ + 3³ + 7² + 7⁴ + 8⁷ .

It is not an unprimeable number, because it can be changed into a prime (4053779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013443 + ... + 1013446.

Almost surely, 2^4053778 is an apocalyptic number.

4053778 is a deficient number, since it is larger than the sum of its proper divisors (2026892).

4053778 is a wasteful number, since it uses less digits than its factorization.

4053778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026891.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 4053778 is about 2013.3996125956. The cubic root of 4053778 is about 159.4483344682.

The spelling of 4053778 in words is "four million, fifty-three thousand, seven hundred seventy-eight".