4055415978 has 8 divisors (see below), whose sum is σ = 8110831968. Its totient is φ = 1351805324.

The previous prime is 4055415971. The next prime is 4055415983. The reversal of 4055415978 is 8795145504.

It is a happy number.

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

4055415978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (4055415971) 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, 337951326 + ... + 337951337.

It is an arithmetic number, because the mean of its divisors is an integer number (1013853996).

Almost surely, 2^4055415978 is an apocalyptic number.

4055415978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4055415978 is a wasteful number, since it uses less digits than its factorization.

4055415978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675902668.

The product of its (nonzero) digits is 1008000, while the sum is 48.

The square root of 4055415978 is about 63682.1480322390. The cubic root of 4055415978 is about 1594.6980725197.

The spelling of 4055415978 in words is "four billion, fifty-five million, four hundred fifteen thousand, nine hundred seventy-eight".