402440414 has 16 divisors (see below), whose sum is σ = 617226048. Its totient is φ = 196708512.

The previous prime is 402440411. The next prime is 402440417. The reversal of 402440414 is 414044204.

It is an interprime number because it is at equal distance from previous prime (402440411) and next prime (402440417).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 402440414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402440411) 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, 100784 + ... + 104700.

It is an arithmetic number, because the mean of its divisors is an integer number (38576628).

Almost surely, 2^402440414 is an apocalyptic number.

402440414 is a deficient number, since it is larger than the sum of its proper divisors (214785634).

402440414 is a wasteful number, since it uses less digits than its factorization.

402440414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059.

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

The square root of 402440414 is about 20060.9175762227. The cubic root of 402440414 is about 738.3016897041.

Adding to 402440414 its reverse (414044204), we get a palindrome (816484618).

The spelling of 402440414 in words is "four hundred two million, four hundred forty thousand, four hundred fourteen".