400621062 has 16 divisors (see below), whose sum is σ = 804291840. Its totient is φ = 133032072.

The previous prime is 400621057. The next prime is 400621063. The reversal of 400621062 is 260126004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400621063) 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, 125362 + ... + 128517.

It is an arithmetic number, because the mean of its divisors is an integer number (50268240).

Almost surely, 2^400621062 is an apocalyptic number.

400621062 is an abundant number, since it is smaller than the sum of its proper divisors (403670778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400621062 is a wasteful number, since it uses less digits than its factorization.

400621062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254147.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 400621062 is about 20015.5205278304. The cubic root of 400621062 is about 737.1874378658.

Adding to 400621062 its reverse (260126004), we get a palindrome (660747066).

The spelling of 400621062 in words is "four hundred million, six hundred twenty-one thousand, sixty-two".