1401407 has 4 divisors (see below), whose sum is σ = 1601616. Its totient is φ = 1201200.

The previous prime is 1401403. The next prime is 1401409. The reversal of 1401407 is 7041041.

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

It is not a de Polignac number, because 1401407 - 2² = 1401403 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 (1401401) 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, 100094 + ... + 100107.

It is an arithmetic number, because the mean of its divisors is an integer number (400404).

2^1401407 is an apocalyptic number.

1401407 is a deficient number, since it is larger than the sum of its proper divisors (200209).

1401407 is an equidigital number, since it uses as much as digits as its factorization.

1401407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200208.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1401407 is about 1183.8103733284. The cubic root of 1401407 is about 111.9063577402.

Adding to 1401407 its reverse (7041041), we get a palindrome (8442448).

The spelling of 1401407 in words is "one million, four hundred one thousand, four hundred seven".