900261961 has 4 divisors (see below), whose sum is σ = 900389392. Its totient is φ = 900134532.

The previous prime is 900261949. The next prime is 900261997. The reversal of 900261961 is 169162009.

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, and also an emirpimes, since its reverse is a distinct semiprime: 169162009 = 31 ⋅5456839.

It is a cyclic number.

It is not a de Polignac number, because 900261961 - 2¹⁵ = 900229193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900961961) 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, 52455 + ... + 67468.

It is an arithmetic number, because the mean of its divisors is an integer number (225097348).

Almost surely, 2^900261961 is an apocalyptic number.

It is an amenable number.

900261961 is a deficient number, since it is larger than the sum of its proper divisors (127431).

900261961 is a wasteful number, since it uses less digits than its factorization.

900261961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127430.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 900261961 is about 30004.3656990112. The cubic root of 900261961 is about 965.5830498018.

The spelling of 900261961 in words is "nine hundred million, two hundred sixty-one thousand, nine hundred sixty-one".