954721906 has 4 divisors (see below), whose sum is σ = 1432082862. Its totient is φ = 477360952.

The previous prime is 954721891. The next prime is 954721907. The reversal of 954721906 is 609127459.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 678863025 + 275858881 = 26055^2 + 16609^2 .

It is a super-2 number, since 2×954721906² = 1822987835592545672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (954721907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238680475 + ... + 238680478.

Almost surely, 2^954721906 is an apocalyptic number.

954721906 is a deficient number, since it is larger than the sum of its proper divisors (477360956).

954721906 is a wasteful number, since it uses less digits than its factorization.

954721906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477360955.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 954721906 is about 30898.5744978632. The cubic root of 954721906 is about 984.6736036229.

The spelling of 954721906 in words is "nine hundred fifty-four million, seven hundred twenty-one thousand, nine hundred six".