400212446 has 4 divisors (see below), whose sum is σ = 600318672. Its totient is φ = 200106222.

The previous prime is 400212437. The next prime is 400212457. The reversal of 400212446 is 644212004.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100053110 + ... + 100053113.

It is an arithmetic number, because the mean of its divisors is an integer number (150079668).

Almost surely, 2^400212446 is an apocalyptic number.

400212446 is a deficient number, since it is larger than the sum of its proper divisors (200106226).

400212446 is a wasteful number, since it uses less digits than its factorization.

400212446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200106225.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 400212446 is about 20005.3104449794. The cubic root of 400212446 is about 736.9367196008.

The spelling of 400212446 in words is "four hundred million, two hundred twelve thousand, four hundred forty-six".