1409257149 has 4 divisors (see below), whose sum is σ = 1879009536. Its totient is φ = 939504764.

The previous prime is 1409257133. The next prime is 1409257153. The reversal of 1409257149 is 9417529041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1409257149 - 2⁴ = 1409257133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1409257149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409257159) 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, 234876189 + ... + 234876194.

It is an arithmetic number, because the mean of its divisors is an integer number (469752384).

Almost surely, 2^1409257149 is an apocalyptic number.

It is an amenable number.

1409257149 is a deficient number, since it is larger than the sum of its proper divisors (469752387).

1409257149 is an equidigital number, since it uses as much as digits as its factorization.

1409257149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469752386.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1409257149 is about 37540.0739077589. The cubic root of 1409257149 is about 1121.1492107726.

The spelling of 1409257149 in words is "one billion, four hundred nine million, two hundred fifty-seven thousand, one hundred forty-nine".