40229919 has 8 divisors (see below), whose sum is σ = 59599920. Its totient is φ = 26819928.

The previous prime is 40229887. The next prime is 40229923. The reversal of 40229919 is 91992204.

It is not a de Polignac number, because 40229919 - 2⁵ = 40229887 is a prime.

It is a super-2 number, since 2×40229919² = 3236892765493122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40229419) 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, 744972 + ... + 745025.

It is an arithmetic number, because the mean of its divisors is an integer number (7449990).

Almost surely, 2^40229919 is an apocalyptic number.

40229919 is a deficient number, since it is larger than the sum of its proper divisors (19370001).

40229919 is a wasteful number, since it uses less digits than its factorization.

40229919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490006 (or 1490000 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 40229919 is about 6342.7059682757. The cubic root of 40229919 is about 342.6491977894.

The spelling of 40229919 in words is "forty million, two hundred twenty-nine thousand, nine hundred nineteen".