40429799 has 4 divisors (see below), whose sum is σ = 41823960. Its totient is φ = 39035640.

The previous prime is 40429787. The next prime is 40429801. The reversal of 40429799 is 99792404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40429799 - 2⁴ = 40429783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40429759) 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, 697037 + ... + 697094.

It is an arithmetic number, because the mean of its divisors is an integer number (10455990).

Almost surely, 2^40429799 is an apocalyptic number.

40429799 is a deficient number, since it is larger than the sum of its proper divisors (1394161).

40429799 is a wasteful number, since it uses less digits than its factorization.

40429799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394160.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 40429799 is about 6358.4431270556. The cubic root of 40429799 is about 343.2157380494.

It can be divided in two parts, 404 and 29799, that added together give a palindrome (30203).

The spelling of 40429799 in words is "forty million, four hundred twenty-nine thousand, seven hundred ninety-nine".