3778973 has 4 divisors (see below), whose sum is σ = 4122528. Its totient is φ = 3435420.

The previous prime is 3778963. The next prime is 3778987. The reversal of 3778973 is 3798773.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3778973 - 2⁶ = 3778909 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 (3778963) 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 in 3 ways as a sum of consecutive naturals, for example, 171761 + ... + 171782.

It is an arithmetic number, because the mean of its divisors is an integer number (1030632).

Almost surely, 2^3778973 is an apocalyptic number.

It is an amenable number.

3778973 is a deficient number, since it is larger than the sum of its proper divisors (343555).

3778973 is a wasteful number, since it uses less digits than its factorization.

3778973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343554.

The product of its digits is 222264, while the sum is 44.

The square root of 3778973 is about 1943.9580756796. The cubic root of 3778973 is about 155.7607141284.

The spelling of 3778973 in words is "three million, seven hundred seventy-eight thousand, nine hundred seventy-three".