419993690 has 8 divisors (see below), whose sum is σ = 755988660. Its totient is φ = 167997472.

The previous prime is 419993647. The next prime is 419993701. The reversal of 419993690 is 96399914.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 415629769 + 4363921 = 20387^2 + 2089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×419993690² = 352789399279632200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20999675 + ... + 20999694.

Almost surely, 2^419993690 is an apocalyptic number.

419993690 is a deficient number, since it is larger than the sum of its proper divisors (335994970).

419993690 is a wasteful number, since it uses less digits than its factorization.

419993690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41999376.

The product of its (nonzero) digits is 472392, while the sum is 50.

The square root of 419993690 is about 20493.7475831045. The cubic root of 419993690 is about 748.8834883233.

The spelling of 419993690 in words is "four hundred nineteen million, nine hundred ninety-three thousand, six hundred ninety".