406303212 has 24 divisors (see below), whose sum is σ = 1083475456. Its totient is φ = 116086608.

The previous prime is 406303207. The next prime is 406303217. The reversal of 406303212 is 212303604.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (406303207) and next prime (406303217).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (406303217) 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, 2418388 + ... + 2418555.

Almost surely, 2^406303212 is an apocalyptic number.

406303212 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

406303212 is an abundant number, since it is smaller than the sum of its proper divisors (677172244).

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

406303212 is a wasteful number, since it uses less digits than its factorization.

406303212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836957 (or 4836955 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 406303212 is about 20156.9643547832. The cubic root of 406303212 is about 740.6563521703.

Adding to 406303212 its reverse (212303604), we get a palindrome (618606816).

The spelling of 406303212 in words is "four hundred six million, three hundred three thousand, two hundred twelve".