40669420 has 48 divisors (see below), whose sum is σ = 93604896. Its totient is φ = 14720000.

The previous prime is 40669403. The next prime is 40669459. The reversal of 40669420 is 2496604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87990 + ... + 88450.

It is an arithmetic number, because the mean of its divisors is an integer number (1950102).

Almost surely, 2^40669420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40669420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46802448).

40669420 is an abundant number, since it is smaller than the sum of its proper divisors (52935476).

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

40669420 is a wasteful number, since it uses less digits than its factorization.

40669420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 40669420 is about 6377.2580314740. The cubic root of 40669420 is about 343.8924645848.

The spelling of 40669420 in words is "forty million, six hundred sixty-nine thousand, four hundred twenty".