400310555402 has 4 divisors (see below), whose sum is σ = 600465833106. Its totient is φ = 200155277700.

The previous prime is 400310555399. The next prime is 400310555429. The reversal of 400310555402 is 204555013004.

It is a Cunningham number, because it is equal to 632701²+1.

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., 400310555401 + 1 = 632701^2 + 1^2 .

It is a super-2 number, since 2×400310555402² (a number of 24 digits) 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, 100077638849 + ... + 100077638852.

Almost surely, 2^400310555402 is an apocalyptic number.

400310555402 is a deficient number, since it is larger than the sum of its proper divisors (200155277704).

400310555402 is a wasteful number, since it uses less digits than its factorization.

400310555402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200155277703.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 400310555402 its reverse (204555013004), we get a palindrome (604865568406).

The spelling of 400310555402 in words is "four hundred billion, three hundred ten million, five hundred fifty-five thousand, four hundred two".