415491979 has 4 divisors (see below), whose sum is σ = 474847984. Its totient is φ = 356135976.

The previous prime is 415491971. The next prime is 415491997. The reversal of 415491979 is 979194514.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979194514 = 2 ⋅489597257.

It is not a de Polignac number, because 415491979 - 2³ = 415491971 is a prime.

It is a super-2 number, since 2×415491979² = 345267169226672882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (415491971) 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, 29677992 + ... + 29678005.

It is an arithmetic number, because the mean of its divisors is an integer number (118711996).

Almost surely, 2^415491979 is an apocalyptic number.

415491979 is a deficient number, since it is larger than the sum of its proper divisors (59356005).

415491979 is an equidigital number, since it uses as much as digits as its factorization.

415491979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59356004.

The product of its digits is 408240, while the sum is 49.

The square root of 415491979 is about 20383.6203604757. The cubic root of 415491979 is about 746.1982303291.

The spelling of 415491979 in words is "four hundred fifteen million, four hundred ninety-one thousand, nine hundred seventy-nine".