40469920 has 24 divisors (see below), whose sum is σ = 95610564. Its totient is φ = 16187904.

The previous prime is 40469893. The next prime is 40469921. The reversal of 40469920 is 2996404.

It can be written as a sum of positive squares in 2 ways, for example, as 38291344 + 2178576 = 6188^2 + 1476^2 .

It is not an unprimeable number, because it can be changed into a prime (40469921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126309 + ... + 126628.

Almost surely, 2^40469920 is an apocalyptic number.

40469920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40469920 is an abundant number, since it is smaller than the sum of its proper divisors (55140644).

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

40469920 is a wasteful number, since it uses less digits than its factorization.

40469920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252952 (or 252944 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 40469920 is about 6361.5972837016. The cubic root of 40469920 is about 343.3292319448.

It can be divided in two parts, 4046 and 9920, that multiplied together give a triangular number (40136320 = T₈₉₅₉).

The spelling of 40469920 in words is "forty million, four hundred sixty-nine thousand, nine hundred twenty".