1455639906 has 32 divisors (see below), whose sum is σ = 3434508288. Its totient is φ = 402480720.

The previous prime is 1455639901. The next prime is 1455639907. The reversal of 1455639906 is 6099365541.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1455639901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557700 + ... + 560303.

It is an arithmetic number, because the mean of its divisors is an integer number (107328384).

Almost surely, 2^1455639906 is an apocalyptic number.

1455639906 is an abundant number, since it is smaller than the sum of its proper divisors (1978868382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1455639906 is a wasteful number, since it uses less digits than its factorization.

1455639906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118046.

The product of its (nonzero) digits is 874800, while the sum is 48.

The square root of 1455639906 is about 38152.8492513993. The cubic root of 1455639906 is about 1133.3167765940.

The spelling of 1455639906 in words is "one billion, four hundred fifty-five million, six hundred thirty-nine thousand, nine hundred six".