16435949 has 4 divisors (see below), whose sum is σ = 16589664. Its totient is φ = 16282236.

The previous prime is 16435919. The next prime is 16435981. The reversal of 16435949 is 94953461.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94953461 = 557 ⋅170473.

It is a cyclic number.

It is not a de Polignac number, because 16435949 - 2⁸ = 16435693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16435919) 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, 76697 + ... + 76910.

It is an arithmetic number, because the mean of its divisors is an integer number (4147416).

Almost surely, 2^16435949 is an apocalyptic number.

It is an amenable number.

16435949 is a deficient number, since it is larger than the sum of its proper divisors (153715).

16435949 is a wasteful number, since it uses less digits than its factorization.

16435949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153714.

The product of its digits is 116640, while the sum is 41.

The square root of 16435949 is about 4054.1274030302. The cubic root of 16435949 is about 254.2523222665.

The spelling of 16435949 in words is "sixteen million, four hundred thirty-five thousand, nine hundred forty-nine".