1357949 has 4 divisors (see below), whose sum is σ = 1429440. Its totient is φ = 1286460.

The previous prime is 1357927. The next prime is 1357969. The reversal of 1357949 is 9497531.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-1357949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357919) 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, 35717 + ... + 35754.

It is an arithmetic number, because the mean of its divisors is an integer number (357360).

2^1357949 is an apocalyptic number.

1357949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1357949 is a deficient number, since it is larger than the sum of its proper divisors (71491).

1357949 is an equidigital number, since it uses as much as digits as its factorization.

1357949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71490.

The product of its digits is 34020, while the sum is 38.

The square root of 1357949 is about 1165.3106881858. The cubic root of 1357949 is about 110.7374418242.

The spelling of 1357949 in words is "one million, three hundred fifty-seven thousand, nine hundred forty-nine".