400849915612 has 24 divisors (see below), whose sum is σ = 714820186080. Its totient is φ = 196632471360.

The previous prime is 400849915597. The next prime is 400849915649. The reversal of 400849915612 is 216519948004.

It is a super-2 number, since 2×400849915612² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2016688 + ... + 2206519.

It is an arithmetic number, because the mean of its divisors is an integer number (29784174420).

Almost surely, 2^400849915612 is an apocalyptic number.

It is an amenable number.

400849915612 is a deficient number, since it is larger than the sum of its proper divisors (313970270468).

400849915612 is a wasteful number, since it uses less digits than its factorization.

400849915612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223661 (or 4223659 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 400849915612 in words is "four hundred billion, eight hundred forty-nine million, nine hundred fifteen thousand, six hundred twelve".