415978 has 8 divisors (see below), whose sum is σ = 651168. Its totient is φ = 198924.

The previous prime is 415969. The next prime is 415979. The reversal of 415978 is 879514.

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 (415979) 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, 4476 + ... + 4567.

It is an arithmetic number, because the mean of its divisors is an integer number (81396).

2⁴¹⁵⁹⁷⁸ is an apocalyptic number.

415978 is a deficient number, since it is larger than the sum of its proper divisors (235190).

415978 is a wasteful number, since it uses less digits than its factorization.

415978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9068.

The product of its digits is 10080, while the sum is 34.

The square root of 415978 is about 644.9635648624. The cubic root of 415978 is about 74.6489071637.

The spelling of 415978 in words is "four hundred fifteen thousand, nine hundred seventy-eight".