1401091 has 4 divisors (see below), whose sum is σ = 1462032. Its totient is φ = 1340152.

The previous prime is 1401083. The next prime is 1401119. The reversal of 1401091 is 1901041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1901041 = 557 ⋅3413.

It is a cyclic number.

It is not a de Polignac number, because 1401091 - 2³ = 1401083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401031) 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, 30436 + ... + 30481.

It is an arithmetic number, because the mean of its divisors is an integer number (365508).

2^1401091 is an apocalyptic number.

1401091 is a deficient number, since it is larger than the sum of its proper divisors (60941).

1401091 is an equidigital number, since it uses as much as digits as its factorization.

1401091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60940.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1401091 is about 1183.6768984820. The cubic root of 1401091 is about 111.8979459400.

The spelling of 1401091 in words is "one million, four hundred one thousand, ninety-one".