402998 has 4 divisors (see below), whose sum is σ = 604500. Its totient is φ = 201498.

The previous prime is 402991. The next prime is 403001. The reversal of 402998 is 899204.

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

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100748 + ... + 100751.

It is an arithmetic number, because the mean of its divisors is an integer number (151125).

2⁴⁰²⁹⁹⁸ is an apocalyptic number.

402998 is a deficient number, since it is larger than the sum of its proper divisors (201502).

402998 is a wasteful number, since it uses less digits than its factorization.

402998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201501.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 402998 is about 634.8212346795. The cubic root of 402998 is about 73.8642507620.

The spelling of 402998 in words is "four hundred two thousand, nine hundred ninety-eight".