1404157207 has 4 divisors (see below), whose sum is σ = 1404232416. Its totient is φ = 1404082000.

The previous prime is 1404157201. The next prime is 1404157219. The reversal of 1404157207 is 7027514041.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7027514041 = 71 ⋅98979071.

It is a cyclic number.

It is not a de Polignac number, because 1404157207 - 2²⁷ = 1269939479 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 (1404157201) 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, 14082 + ... + 54832.

It is an arithmetic number, because the mean of its divisors is an integer number (351058104).

Almost surely, 2^1404157207 is an apocalyptic number.

1404157207 is a deficient number, since it is larger than the sum of its proper divisors (75209).

1404157207 is an equidigital number, since it uses as much as digits as its factorization.

1404157207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75208.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 1404157207 is about 37472.0857038943. The cubic root of 1404157207 is about 1119.7951387106.

The spelling of 1404157207 in words is "one billion, four hundred four million, one hundred fifty-seven thousand, two hundred seven".