90414391 has 2 divisors, whose sum is σ = 90414392. Its totient is φ = 90414390.

The previous prime is 90414371. The next prime is 90414409. The reversal of 90414391 is 19341409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90414391 - 2¹⁵ = 90381623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90414341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45207195 + 45207196.

It is an arithmetic number, because the mean of its divisors is an integer number (45207196).

Almost surely, 2^90414391 is an apocalyptic number.

90414391 is a deficient number, since it is larger than the sum of its proper divisors (1).

90414391 is an equidigital number, since it uses as much as digits as its factorization.

90414391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 90414391 is about 9508.6482214876. The cubic root of 90414391 is about 448.8272194301.

The spelling of 90414391 in words is "ninety million, four hundred fourteen thousand, three hundred ninety-one".