442405413 has 12 divisors (see below), whose sum is σ = 639225600. Its totient is φ = 294846696.

The previous prime is 442405409. The next prime is 442405417. The reversal of 442405413 is 314504244.

It is a happy number.

442405413 is a `hidden beast` number, since 4 + 4 + 240 + 5 + 413 = 666.

It is an interprime number because it is at equal distance from previous prime (442405409) and next prime (442405417).

It is not a de Polignac number, because 442405413 - 2² = 442405409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442405417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38070 + ... + 48312.

It is an arithmetic number, because the mean of its divisors is an integer number (53268800).

Almost surely, 2^442405413 is an apocalyptic number.

It is an amenable number.

442405413 is a deficient number, since it is larger than the sum of its proper divisors (196820187).

442405413 is a wasteful number, since it uses less digits than its factorization.

442405413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15048 (or 15045 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 442405413 is about 21033.4355966875. The cubic root of 442405413 is about 761.9739848931.

Adding to 442405413 its reverse (314504244), we get a palindrome (756909657).

The spelling of 442405413 in words is "four hundred forty-two million, four hundred five thousand, four hundred thirteen".