901440233 has 2 divisors, whose sum is σ = 901440234. Its totient is φ = 901440232.

The previous prime is 901440209. The next prime is 901440277. The reversal of 901440233 is 332044109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743761984 + 157678249 = 27272^2 + 12557^2 .

It is a cyclic number.

It is not a de Polignac number, because 901440233 - 2²² = 897245929 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (901440833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450720116 + 450720117.

It is an arithmetic number, because the mean of its divisors is an integer number (450720117).

Almost surely, 2^901440233 is an apocalyptic number.

901440233 is the 16049-th centered heptagonal number.

It is an amenable number.

901440233 is a deficient number, since it is larger than the sum of its proper divisors (1).

901440233 is an equidigital number, since it uses as much as digits as its factorization.

901440233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 901440233 is about 30023.9942879025. The cubic root of 901440233 is about 966.0041211226.

The spelling of 901440233 in words is "nine hundred one million, four hundred forty thousand, two hundred thirty-three".