1400779 has 4 divisors (see below), whose sum is σ = 1406880. Its totient is φ = 1394680.

The previous prime is 1400753. The next prime is 1400801. The reversal of 1400779 is 9770041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1400779 - 2⁵ = 1400747 is a prime.

It is a Duffinian number.

1400779 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1400279) 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, 2692 + ... + 3169.

It is an arithmetic number, because the mean of its divisors is an integer number (351720).

2^1400779 is an apocalyptic number.

1400779 is a deficient number, since it is larger than the sum of its proper divisors (6101).

1400779 is an equidigital number, since it uses as much as digits as its factorization.

1400779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1400779 is about 1183.5450984225. The cubic root of 1400779 is about 111.8896393772.

The spelling of 1400779 in words is "one million, four hundred thousand, seven hundred seventy-nine".