40099794 has 16 divisors (see below), whose sum is σ = 91656768. Its totient is φ = 11457072.

The previous prime is 40099783. The next prime is 40099799. The reversal of 40099794 is 49799004.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 954757 = 40099794 / (4 + 0 + 0 + 9 + 9 + 7 + 9 + 4).

It is not an unprimeable number, because it can be changed into a prime (40099799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477337 + ... + 477420.

It is an arithmetic number, because the mean of its divisors is an integer number (5728548).

Almost surely, 2^40099794 is an apocalyptic number.

40099794 is an abundant number, since it is smaller than the sum of its proper divisors (51556974).

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

40099794 is a wasteful number, since it uses less digits than its factorization.

40099794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954769.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 40099794 is about 6332.4398141633. The cubic root of 40099794 is about 342.2793620428.

The spelling of 40099794 in words is "forty million, ninety-nine thousand, seven hundred ninety-four".