3923115478 has 8 divisors (see below), whose sum is σ = 6194392920. Its totient is φ = 1858317840.

The previous prime is 3923115473. The next prime is 3923115487. The reversal of 3923115478 is 8745113293.

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 (3923115473) 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, 51619903 + ... + 51619978.

It is an arithmetic number, because the mean of its divisors is an integer number (774299115).

Almost surely, 2^3923115478 is an apocalyptic number.

3923115478 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3923115478 is a deficient number, since it is larger than the sum of its proper divisors (2271277442).

3923115478 is a wasteful number, since it uses less digits than its factorization.

3923115478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103239902.

The product of its digits is 181440, while the sum is 43.

The square root of 3923115478 is about 62634.7785020431. The cubic root of 3923115478 is about 1577.1646363529.

The spelling of 3923115478 in words is "three billion, nine hundred twenty-three million, one hundred fifteen thousand, four hundred seventy-eight".