415450421 has 4 divisors (see below), whose sum is σ = 415497132. Its totient is φ = 415403712.

The previous prime is 415450379. The next prime is 415450429. The reversal of 415450421 is 124054514.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 249324100 + 166126321 = 15790^2 + 12889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-415450421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415450429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5426 + ... + 29331.

It is an arithmetic number, because the mean of its divisors is an integer number (103874283).

Almost surely, 2^415450421 is an apocalyptic number.

It is an amenable number.

415450421 is a deficient number, since it is larger than the sum of its proper divisors (46711).

415450421 is a wasteful number, since it uses less digits than its factorization.

415450421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46710.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 415450421 is about 20382.6009380550. The cubic root of 415450421 is about 746.1733509559.

The spelling of 415450421 in words is "four hundred fifteen million, four hundred fifty thousand, four hundred twenty-one".