402499999 has 8 divisors (see below), whose sum is σ = 439245648. Its totient is φ = 365780160.

The previous prime is 402499943. The next prime is 402500003. The reversal of 402499999 is 999994204.

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

It is a cyclic number.

It is not a de Polignac number, because 402499999 - 2¹⁹ = 401975711 is a prime.

It is a Duffinian number.

402499999 is a modest number, since divided by 99999 gives 4024 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402499199) 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, 42049 + ... + 50725.

It is an arithmetic number, because the mean of its divisors is an integer number (54905706).

Almost surely, 2^402499999 is an apocalyptic number.

402499999 is a deficient number, since it is larger than the sum of its proper divisors (36745649).

402499999 is a wasteful number, since it uses less digits than its factorization.

402499999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12905.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The square root of 402499999 is about 20062.4026228166. The cubic root of 402499999 is about 738.3381253550.

The spelling of 402499999 in words is "four hundred two million, four hundred ninety-nine thousand, nine hundred ninety-nine".