1408709401 has 4 divisors (see below), whose sum is σ = 1536773904. Its totient is φ = 1280644900.

The previous prime is 1408709389. The next prime is 1408709411. The reversal of 1408709401 is 1049078041.

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 a de Polignac number, because none of the positive numbers 2^k-1408709401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1408709411) 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, 64032235 + ... + 64032256.

It is an arithmetic number, because the mean of its divisors is an integer number (384193476).

Almost surely, 2^1408709401 is an apocalyptic number.

1408709401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1408709401 is a deficient number, since it is larger than the sum of its proper divisors (128064503).

1408709401 is a wasteful number, since it uses less digits than its factorization.

1408709401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128064502.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1408709401 is about 37532.7776883087. Note that the first 3 decimals coincide. The cubic root of 1408709401 is about 1121.0039364061.

The spelling of 1408709401 in words is "one billion, four hundred eight million, seven hundred nine thousand, four hundred one".