19914386 has 4 divisors (see below), whose sum is σ = 29871582. Its totient is φ = 9957192.

The previous prime is 19914371. The next prime is 19914449. The reversal of 19914386 is 68341991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68341991 = 139 ⋅491669.

It can be written as a sum of positive squares in only one way, i.e., 16605625 + 3308761 = 4075^2 + 1819^2 .

It is a super-3 number, since 3×19914386³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978595 + ... + 4978598.

Almost surely, 2^19914386 is an apocalyptic number.

19914386 is a deficient number, since it is larger than the sum of its proper divisors (9957196).

19914386 is an equidigital number, since it uses as much as digits as its factorization.

19914386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9957195.

The product of its digits is 46656, while the sum is 41.

The square root of 19914386 is about 4462.5537531777. The cubic root of 19914386 is about 271.0538874244.

The spelling of 19914386 in words is "nineteen million, nine hundred fourteen thousand, three hundred eighty-six".