402445499 has 4 divisors (see below), whose sum is σ = 416322960. Its totient is φ = 388568040.

The previous prime is 402445489. The next prime is 402445523. The reversal of 402445499 is 994544204.

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

It is a cyclic number.

It is not a de Polignac number, because 402445499 - 2²⁰ = 401396923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402445409) 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, 6938687 + ... + 6938744.

It is an arithmetic number, because the mean of its divisors is an integer number (104080740).

Almost surely, 2^402445499 is an apocalyptic number.

402445499 is a deficient number, since it is larger than the sum of its proper divisors (13877461).

402445499 is a wasteful number, since it uses less digits than its factorization.

402445499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13877460.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 402445499 is about 20061.0443147908. The cubic root of 402445499 is about 738.3047992728.

The spelling of 402445499 in words is "four hundred two million, four hundred forty-five thousand, four hundred ninety-nine".