402244415 has 4 divisors (see below), whose sum is σ = 482693304. Its totient is φ = 321795528.

The previous prime is 402244411. The next prime is 402244417. The reversal of 402244415 is 514442204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402244415 - 2² = 402244411 is a prime.

It is a super-3 number, since 3×402244415³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402244411) 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, 40224437 + ... + 40224446.

It is an arithmetic number, because the mean of its divisors is an integer number (120673326).

Almost surely, 2^402244415 is an apocalyptic number.

402244415 is a deficient number, since it is larger than the sum of its proper divisors (80448889).

402244415 is an equidigital number, since it uses as much as digits as its factorization.

402244415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80448888.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 402244415 is about 20056.0318856946. The cubic root of 402244415 is about 738.1818128344.

Adding to 402244415 its reverse (514442204), we get a palindrome (916686619).

The spelling of 402244415 in words is "four hundred two million, two hundred forty-four thousand, four hundred fifteen".