900149771 has 2 divisors, whose sum is σ = 900149772. Its totient is φ = 900149770.

The previous prime is 900149753. The next prime is 900149773. The reversal of 900149771 is 177941009.

900149771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 900149771 - 2⁶ = 900149707 is a prime.

It is a super-2 number, since 2×900149771² = 1620539220462704882, which contains 22 as substring.

Together with 900149773, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (900149773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450074885 + 450074886.

It is an arithmetic number, because the mean of its divisors is an integer number (450074886).

Almost surely, 2^900149771 is an apocalyptic number.

900149771 is a deficient number, since it is larger than the sum of its proper divisors (1).

900149771 is an equidigital number, since it uses as much as digits as its factorization.

900149771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 900149771 is about 30002.4960794931. The cubic root of 900149771 is about 965.5429380464.

The spelling of 900149771 in words is "nine hundred million, one hundred forty-nine thousand, seven hundred seventy-one".