16149977 has 4 divisors (see below), whose sum is σ = 16670976. Its totient is φ = 15628980.

The previous prime is 16149901. The next prime is 16149989. The reversal of 16149977 is 77994161.

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 a cyclic number.

It is not a de Polignac number, because 16149977 - 2¹⁶ = 16084441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16149997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260453 + ... + 260514.

It is an arithmetic number, because the mean of its divisors is an integer number (4167744).

Almost surely, 2^16149977 is an apocalyptic number.

It is an amenable number.

16149977 is a deficient number, since it is larger than the sum of its proper divisors (520999).

16149977 is an equidigital number, since it uses as much as digits as its factorization.

16149977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520998.

The product of its digits is 95256, while the sum is 44.

The square root of 16149977 is about 4018.7033978635. The cubic root of 16149977 is about 252.7690925952.

The spelling of 16149977 in words is "sixteen million, one hundred forty-nine thousand, nine hundred seventy-seven".