4078923 has 4 divisors (see below), whose sum is σ = 5438568. Its totient is φ = 2719280.

The previous prime is 4078897. The next prime is 4078951. The reversal of 4078923 is 3298704.

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

It is a cyclic number.

It is not a de Polignac number, because 4078923 - 2⁵ = 4078891 is a prime.

It is a super-2 number, since 2×4078923² = 33275225679858, which contains 22 as substring.

It is a D-number.

4078923 is a lucky 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, 679818 + ... + 679823.

It is an arithmetic number, because the mean of its divisors is an integer number (1359642).

Almost surely, 2^4078923 is an apocalyptic number.

4078923 is a deficient number, since it is larger than the sum of its proper divisors (1359645).

4078923 is a wasteful number, since it uses less digits than its factorization.

4078923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359644.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 4078923 is about 2019.6343728507. The cubic root of 4078923 is about 159.7773334956. Note that the first 3 decimals are identical.

The spelling of 4078923 in words is "four million, seventy-eight thousand, nine hundred twenty-three".