402002386 has 8 divisors (see below), whose sum is σ = 611264124. Its totient is φ = 198247680.

The previous prime is 402002351. The next prime is 402002387. The reversal of 402002386 is 683200204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 390813361 + 11189025 = 19769^2 + 3345^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 402002386.

It is not an unprimeable number, because it can be changed into a prime (402002387) 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, 1376575 + ... + 1376866.

Almost surely, 2^402002386 is an apocalyptic number.

402002386 is a deficient number, since it is larger than the sum of its proper divisors (209261738).

402002386 is a wasteful number, since it uses less digits than its factorization.

402002386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753516.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 402002386 is about 20049.9971571070. The cubic root of 402002386 is about 738.0337293603.

The spelling of 402002386 in words is "four hundred two million, two thousand, three hundred eighty-six".