911920040 has 32 divisors (see below), whose sum is σ = 2053507680. Its totient is φ = 364468032.

The previous prime is 911920021. The next prime is 911920091. The reversal of 911920040 is 40029119.

It is a junction number, because it is equal to n+sod(n) for n = 911919991 and 911920009.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43559 + ... + 61001.

It is an arithmetic number, because the mean of its divisors is an integer number (64172115).

Almost surely, 2^911920040 is an apocalyptic number.

It is an amenable number.

911920040 is an abundant number, since it is smaller than the sum of its proper divisors (1141587640).

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

911920040 is a wasteful number, since it uses less digits than its factorization.

911920040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18761 (or 18757 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 911920040 is about 30198.0138419731. The cubic root of 911920040 is about 969.7331749175.

Adding to 911920040 its reverse (40029119), we get a palindrome (951949159).

The spelling of 911920040 in words is "nine hundred eleven million, nine hundred twenty thousand, forty".