402099706 has 4 divisors (see below), whose sum is σ = 603149562. Its totient is φ = 201049852.

The previous prime is 402099637. The next prime is 402099707. The reversal of 402099706 is 607990204.

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., 392396481 + 9703225 = 19809^2 + 3115^2 .

It is not an unprimeable number, because it can be changed into a prime (402099707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100524925 + ... + 100524928.

Almost surely, 2^402099706 is an apocalyptic number.

402099706 is a deficient number, since it is larger than the sum of its proper divisors (201049856).

402099706 is a wasteful number, since it uses less digits than its factorization.

402099706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201049855.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 402099706 is about 20052.4239432543. The cubic root of 402099706 is about 738.0932809532.

The spelling of 402099706 in words is "four hundred two million, ninety-nine thousand, seven hundred six".