1199499421 has 8 divisors (see below), whose sum is σ = 1241377920. Its totient is φ = 1157655408.

The previous prime is 1199499419. The next prime is 1199499443. The reversal of 1199499421 is 1249949911.

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

It is not a de Polignac number, because 1199499421 - 2¹ = 1199499419 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 (1199499401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76560 + ... + 90886.

It is an arithmetic number, because the mean of its divisors is an integer number (155172240).

Almost surely, 2^1199499421 is an apocalyptic number.

It is an amenable number.

1199499421 is a deficient number, since it is larger than the sum of its proper divisors (41878499).

1199499421 is a wasteful number, since it uses less digits than its factorization.

1199499421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17243.

The product of its digits is 209952, while the sum is 49.

The square root of 1199499421 is about 34633.7901622101. The cubic root of 1199499421 is about 1062.5107862527.

The spelling of 1199499421 in words is "one billion, one hundred ninety-nine million, four hundred ninety-nine thousand, four hundred twenty-one".