1949397 has 4 divisors (see below), whose sum is σ = 2599200. Its totient is φ = 1299596.

The previous prime is 1949383. The next prime is 1949417. The reversal of 1949397 is 7939491.

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 1949397 - 2⁶ = 1949333 is a prime.

It is a D-number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949327) 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, 324897 + ... + 324902.

It is an arithmetic number, because the mean of its divisors is an integer number (649800).

2^1949397 is an apocalyptic number.

It is an amenable number.

1949397 is a deficient number, since it is larger than the sum of its proper divisors (649803).

1949397 is an equidigital number, since it uses as much as digits as its factorization.

1949397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649802.

The product of its digits is 61236, while the sum is 42.

The square root of 1949397 is about 1396.2080790484. The cubic root of 1949397 is about 124.9204186786.

It can be divided in two parts, 1949 and 397, that added together give a triangular number (2346 = T₆₈).

The spelling of 1949397 in words is "one million, nine hundred forty-nine thousand, three hundred ninety-seven".