9400051261 has 4 divisors (see below), whose sum is σ = 9554150524. Its totient is φ = 9245952000.

The previous prime is 9400051259. The next prime is 9400051273. The reversal of 9400051261 is 1621500049.

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

It can be written as a sum of positive squares in 2 ways, for example, as 120582361 + 9279468900 = 10981^2 + 96330^2 .

It is a cyclic number.

It is not a de Polignac number, because 9400051261 - 2¹ = 9400051259 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 (9400051201) 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, 77049540 + ... + 77049661.

It is an arithmetic number, because the mean of its divisors is an integer number (2388537631).

Almost surely, 2^9400051261 is an apocalyptic number.

It is an amenable number.

9400051261 is a deficient number, since it is larger than the sum of its proper divisors (154099263).

9400051261 is a wasteful number, since it uses less digits than its factorization.

9400051261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154099262.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 9400051261 is about 96953.8615063887. The cubic root of 9400051261 is about 2110.4581307951.

The spelling of 9400051261 in words is "nine billion, four hundred million, fifty-one thousand, two hundred sixty-one".