400032253 has 4 divisors (see below), whose sum is σ = 423563580. Its totient is φ = 376500928.

The previous prime is 400032239. The next prime is 400032323. The reversal of 400032253 is 352230004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 272184004 + 127848249 = 16498^2 + 11307^2 .

It is a cyclic number.

It is not a de Polignac number, because 400032253 - 2²¹ = 397935101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400032253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400032653) 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, 11765638 + ... + 11765671.

It is an arithmetic number, because the mean of its divisors is an integer number (105890895).

Almost surely, 2^400032253 is an apocalyptic number.

It is an amenable number.

400032253 is a deficient number, since it is larger than the sum of its proper divisors (23531327).

400032253 is a wasteful number, since it uses less digits than its factorization.

400032253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23531326.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 400032253 is about 20000.8063087467. The cubic root of 400032253 is about 736.8261027072.

Adding to 400032253 its reverse (352230004), we get a palindrome (752262257).

The spelling of 400032253 in words is "four hundred million, thirty-two thousand, two hundred fifty-three".