400011245 has 8 divisors (see below), whose sum is σ = 481224984. Its totient is φ = 319201344.

The previous prime is 400011229. The next prime is 400011247. The reversal of 400011245 is 542110004.

It can be written as a sum of positive squares in 4 ways, for example, as 161061481 + 238949764 = 12691^2 + 15458^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400011245 - 2⁴ = 400011229 is a prime.

It is a super-2 number, since 2×400011245² = 320017992252900050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400011247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98774 + ... + 102743.

It is an arithmetic number, because the mean of its divisors is an integer number (60153123).

Almost surely, 2^400011245 is an apocalyptic number.

It is an amenable number.

400011245 is a deficient number, since it is larger than the sum of its proper divisors (81213739).

400011245 is a wasteful number, since it uses less digits than its factorization.

400011245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201919.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 400011245 is about 20000.2811230242. The cubic root of 400011245 is about 736.8132041524.

Adding to 400011245 its reverse (542110004), we get a palindrome (942121249).

The spelling of 400011245 in words is "four hundred million, eleven thousand, two hundred forty-five".