402249853 has 4 divisors (see below), whose sum is σ = 404053888. Its totient is φ = 400445820.

The previous prime is 402249851. The next prime is 402249863. The reversal of 402249853 is 358942204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402249853 - 2¹ = 402249851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402249851) 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, 901683 + ... + 902128.

It is an arithmetic number, because the mean of its divisors is an integer number (101013472).

Almost surely, 2^402249853 is an apocalyptic number.

It is an amenable number.

402249853 is a deficient number, since it is larger than the sum of its proper divisors (1804035).

402249853 is a wasteful number, since it uses less digits than its factorization.

402249853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804034.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 402249853 is about 20056.1674554238. The cubic root of 402249853 is about 738.1851393481.

The spelling of 402249853 in words is "four hundred two million, two hundred forty-nine thousand, eight hundred fifty-three".