40099626 has 96 divisors (see below), whose sum is σ = 105401088. Its totient is φ = 10771200.

The previous prime is 40099621. The next prime is 40099627. The reversal of 40099626 is 62699004.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40099621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 292630 + ... + 292766.

It is an arithmetic number, because the mean of its divisors is an integer number (1097928).

Almost surely, 2^40099626 is an apocalyptic number.

40099626 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40099626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52700544).

40099626 is an abundant number, since it is smaller than the sum of its proper divisors (65301462).

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

40099626 is a wasteful number, since it uses less digits than its factorization.

40099626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 40099626 is about 6332.4265491200. The cubic root of 40099626 is about 342.2788840436.

The spelling of 40099626 in words is "forty million, ninety-nine thousand, six hundred twenty-six".