4078990 has 8 divisors (see below), whose sum is σ = 7342200. Its totient is φ = 1631592.

The previous prime is 4078969. The next prime is 4078993. The reversal of 4078990 is 998704.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4078993) 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, 203940 + ... + 203959.

It is an arithmetic number, because the mean of its divisors is an integer number (917775).

Almost surely, 2^4078990 is an apocalyptic number.

4078990 is a deficient number, since it is larger than the sum of its proper divisors (3263210).

4078990 is a wasteful number, since it uses less digits than its factorization.

4078990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407906.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 4078990 is about 2019.6509599433. The cubic root of 4078990 is about 159.7782083199.

The spelling of 4078990 in words is "four million, seventy-eight thousand, nine hundred ninety".