1405947 has 8 divisors (see below), whose sum is σ = 1880080. Its totient is φ = 934560.

The previous prime is 1405939. The next prime is 1405979. The reversal of 1405947 is 7495041.

It is a happy number.

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

It is not a de Polignac number, because 1405947 - 2³ = 1405939 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 (1405927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1629 + ... + 2337.

It is an arithmetic number, because the mean of its divisors is an integer number (235010).

2^1405947 is an apocalyptic number.

1405947 is a deficient number, since it is larger than the sum of its proper divisors (474133).

1405947 is an equidigital number, since it uses as much as digits as its factorization.

1405947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1405947 is about 1185.7263596631. The cubic root of 1405947 is about 112.0270714747.

The spelling of 1405947 in words is "one million, four hundred five thousand, nine hundred forty-seven".