13858690 has 8 divisors (see below), whose sum is σ = 24945660. Its totient is φ = 5543472.

The previous prime is 13858679. The next prime is 13858699. The reversal of 13858690 is 9685831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13010449 + 848241 = 3607^2 + 921^2 .

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

It is a super-2 number, since 2×13858690² = 384126577032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13858699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692925 + ... + 692944.

Almost surely, 2^13858690 is an apocalyptic number.

13858690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13858690 is a deficient number, since it is larger than the sum of its proper divisors (11086970).

13858690 is a wasteful number, since it uses less digits than its factorization.

13858690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385876.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 13858690 is about 3722.7261516260. The cubic root of 13858690 is about 240.2005846256.

The spelling of 13858690 in words is "thirteen million, eight hundred fifty-eight thousand, six hundred ninety".