1405450399 has 8 divisors (see below), whose sum is σ = 1449119232. Its totient is φ = 1362280920.

The previous prime is 1405450393. The next prime is 1405450421. The reversal of 1405450399 is 9930545041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1405450399 - 2³ = 1405450391 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 (1405450391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119119 + ... + 130384.

It is an arithmetic number, because the mean of its divisors is an integer number (181139904).

Almost surely, 2^1405450399 is an apocalyptic number.

1405450399 is a deficient number, since it is larger than the sum of its proper divisors (43668833).

1405450399 is a wasteful number, since it uses less digits than its factorization.

1405450399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249677.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 1405450399 is about 37489.3371373781. The cubic root of 1405450399 is about 1120.1388005593.

The spelling of 1405450399 in words is "one billion, four hundred five million, four hundred fifty thousand, three hundred ninety-nine".