214155649 has 4 divisors (see below), whose sum is σ = 216866560. Its totient is φ = 211444740.

The previous prime is 214155637. The next prime is 214155661. The reversal of 214155649 is 946551412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (214155637) and next prime (214155661).

It is a cyclic number.

It is not a de Polignac number, because 214155649 - 2¹¹ = 214153601 is a prime.

It is a super-2 number, since 2×214155649² = 91725283997222402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214155619) by changing a digit.

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, 1355337 + ... + 1355494.

It is an arithmetic number, because the mean of its divisors is an integer number (54216640).

Almost surely, 2^214155649 is an apocalyptic number.

It is an amenable number.

214155649 is a deficient number, since it is larger than the sum of its proper divisors (2710911).

214155649 is an equidigital number, since it uses as much as digits as its factorization.

214155649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710910.

The product of its digits is 43200, while the sum is 37.

The square root of 214155649 is about 14634.0578446308. The cubic root of 214155649 is about 598.2873838201.

The spelling of 214155649 in words is "two hundred fourteen million, one hundred fifty-five thousand, six hundred forty-nine".