90277049 has 2 divisors, whose sum is σ = 90277050. Its totient is φ = 90277048.

The previous prime is 90277009. The next prime is 90277051. The reversal of 90277049 is 94077209.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90117049 + 160000 = 9493^2 + 400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90277049 is a prime.

It is a super-2 number, since 2×90277049² = 16299891152296802, which contains 22 as substring.

Together with 90277051, 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 (90277009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45138524 + 45138525.

It is an arithmetic number, because the mean of its divisors is an integer number (45138525).

Almost surely, 2^90277049 is an apocalyptic number.

It is an amenable number.

90277049 is a deficient number, since it is larger than the sum of its proper divisors (1).

90277049 is an equidigital number, since it uses as much as digits as its factorization.

90277049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 90277049 is about 9501.4235249251. The cubic root of 90277049 is about 448.5998438761.

The spelling of 90277049 in words is "ninety million, two hundred seventy-seven thousand, forty-nine".