1999495 has 4 divisors (see below), whose sum is σ = 2399400. Its totient is φ = 1599592.

The previous prime is 1999471. The next prime is 1999499. The reversal of 1999495 is 5949991.

1999495 = T₃₅₀ + T₃₅₁ + ... + T₃₇₉.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5949991 = 197 ⋅30203.

It is a cyclic number.

It is not a de Polignac number, because 1999495 - 2¹⁷ = 1868423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999499) 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, 199945 + ... + 199954.

It is an arithmetic number, because the mean of its divisors is an integer number (599850).

2^1999495 is an apocalyptic number.

1999495 is a deficient number, since it is larger than the sum of its proper divisors (399905).

1999495 is an equidigital number, since it uses as much as digits as its factorization.

1999495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399904.

The product of its digits is 131220, while the sum is 46.

The square root of 1999495 is about 1414.0350066388. The cubic root of 1999495 is about 125.9814997613.

The spelling of 1999495 in words is "one million, nine hundred ninety-nine thousand, four hundred ninety-five".