402440441 has 8 divisors (see below), whose sum is σ = 435994944. Its totient is φ = 369257040.

The previous prime is 402440429. The next prime is 402440449. The reversal of 402440441 is 144044204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402440441 - 2¹⁸ = 402178297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402440449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90515 + ... + 94856.

It is an arithmetic number, because the mean of its divisors is an integer number (54499368).

Almost surely, 2^402440441 is an apocalyptic number.

It is an amenable number.

402440441 is a deficient number, since it is larger than the sum of its proper divisors (33554503).

402440441 is a wasteful number, since it uses less digits than its factorization.

402440441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185551.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 402440441 is about 20060.9182491729. The cubic root of 402440441 is about 738.3017062152.

Adding to 402440441 its reverse (144044204), we get a palindrome (546484645).

The spelling of 402440441 in words is "four hundred two million, four hundred forty thousand, four hundred forty-one".