478387749 has 16 divisors (see below), whose sum is σ = 732755072. Its totient is φ = 271945728.

The previous prime is 478387729. The next prime is 478387829. The reversal of 478387749 is 947783874.

It is a happy number.

It is not a de Polignac number, because 478387749 - 2¹³ = 478379557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478387709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54964 + ... + 63069.

It is an arithmetic number, because the mean of its divisors is an integer number (45797192).

Almost surely, 2^478387749 is an apocalyptic number.

It is an amenable number.

478387749 is a deficient number, since it is larger than the sum of its proper divisors (254367323).

478387749 is a wasteful number, since it uses less digits than its factorization.

478387749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118236.

The product of its digits is 9483264, while the sum is 57.

The square root of 478387749 is about 21872.0769247001. The cubic root of 478387749 is about 782.0959130618.

The spelling of 478387749 in words is "four hundred seventy-eight million, three hundred eighty-seven thousand, seven hundred forty-nine".