402099682 has 4 divisors (see below), whose sum is σ = 603149526. Its totient is φ = 201049840.

The previous prime is 402099637. The next prime is 402099707. The reversal of 402099682 is 286990204.

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

It can be written as a sum of positive squares in only one way, i.e., 251571321 + 150528361 = 15861^2 + 12269^2 .

It is a super-2 number, since 2×402099682² = 323368308529002248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100524919 + ... + 100524922.

Almost surely, 2^402099682 is an apocalyptic number.

402099682 is a deficient number, since it is larger than the sum of its proper divisors (201049844).

402099682 is a wasteful number, since it uses less digits than its factorization.

402099682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201049843.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 402099682 is about 20052.4233448229. The cubic root of 402099682 is about 738.0932662684.

It can be divided in two parts, 40 and 2099682, that multiplied together give a triangular number (83987280 = T₁₂₉₆₀).

The spelling of 402099682 in words is "four hundred two million, ninety-nine thousand, six hundred eighty-two".