400533413 has 32 divisors (see below), whose sum is σ = 504403200. Its totient is φ = 310109184.

The previous prime is 400533409. The next prime is 400533439. The reversal of 400533413 is 314335004.

It is not a de Polignac number, because 400533413 - 2² = 400533409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400533613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 955718 + ... + 956136.

It is an arithmetic number, because the mean of its divisors is an integer number (15762600).

Almost surely, 2^400533413 is an apocalyptic number.

It is an amenable number.

400533413 is a deficient number, since it is larger than the sum of its proper divisors (103869787).

400533413 is a wasteful number, since it uses less digits than its factorization.

400533413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 400533413 is about 20013.3308821895. The cubic root of 400533413 is about 737.1336726327.

Adding to 400533413 its reverse (314335004), we get a palindrome (714868417).

The spelling of 400533413 in words is "four hundred million, five hundred thirty-three thousand, four hundred thirteen".