1409157 has 14 divisors (see below), whose sum is σ = 2113862. Its totient is φ = 938952.

The previous prime is 1409117. The next prime is 1409159. The reversal of 1409157 is 7519041.

It can be written as a sum of positive squares in only one way, i.e., 1285956 + 123201 = 1134^2 + 351^2 .

It is not a de Polignac number, because 1409157 - 2¹⁴ = 1392773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1409157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 238 + ... + 1695.

2^1409157 is an apocalyptic number.

It is an amenable number.

1409157 is a deficient number, since it is larger than the sum of its proper divisors (704705).

1409157 is an frugal number, since it uses more digits than its factorization.

1409157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951 (or 1936 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1409157 is about 1187.0791885970. The cubic root of 1409157 is about 112.1122651950.

The spelling of 1409157 in words is "one million, four hundred nine thousand, one hundred fifty-seven".